feat: 1504 add new error if a gtfs dataset has gtfs files in sub folders

[qcdyx]

Summary:

Closes #1504

Expected behavior:

The screenshot shows that the validator generates a invalid_input_files_in_subfolder notice if the zip file contains a subfolder that contains gtfs files.

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[github-actions]

✅ Rule acceptance tests passed.
New Errors: 9 out of 1439 datasets (~1%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1439 sources (~0 %) are corrupted.
Commit: f809966
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.

[emmambd]

I tested with a few feeds from Chaimaa's report, and it looks like the error is happening in the right cases:

• Error does occur in cases where there's a GTFS file in a subfolder
• No error where there's a subfolder with files unrelated to GTFS

My only suggestion would be to make the Notice code description and message clearer:

Replace Zip files containing Gtfs files in a subfolder are invalid with At least 1 GTFS file is in a subfolder. All GTFS files must reside at the root level directly.

[qcdyx]

@emmambd

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 9 out of 1439 datasets (~1%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1439 sources (~0 %) are corrupted.
Commit: 98a73c8
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.

[github-actions]

This contribution does not follow the conventions set by the Google Java style guide. Please run the following command line at the root of the project to fix formatting errors: ./gradlew goJF.

[github-actions]

This contribution does not follow the conventions set by the Google Java style guide. Please run the following command line at the root of the project to fix formatting errors: ./gradlew goJF.

[github-actions]

This contribution does not follow the conventions set by the Google Java style guide. Please run the following command line at the root of the project to fix formatting errors: ./gradlew goJF.

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 9 out of 1439 datasets (~1%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1439 sources (~0 %) are corrupted.
Commit: 9f506b9
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 9 out of 1439 datasets (~1%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1439 sources (~0 %) are corrupted.
Commit: 8692fdc
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 9 out of 1439 datasets (~1%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1439 sources (~0 %) are corrupted.
Commit: 682b982
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.

[github-actions]

✅ Rule acceptance tests passed.
New Errors: 9 out of 1439 datasets (~1%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Errors: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
New Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
Dropped Warnings: 0 out of 1439 datasets (~0%) are invalid due to code change, which is less than the provided threshold of 1%.
0 out of 1439 sources (~0 %) are corrupted.
Commit: 47d2024
Download the full acceptance test report here (report will disappear after 90 days).
✅ Rule acceptance tests passed.