create gh actions using reusable actions

[vkt1414]

I closed PR 18 by addressing the changes requested. In addition, I made more changes as I realized creating a class would help us reuse the code for addressing the next task in ImagingDataCommons/idc-index-data#2. I wanted to move away from gh api as much as possible as it may not be reusable for future tasks. Instead, I tried to use available gh actions to do the heavy lifting.

This workflow will address task 1 of ImagingDataCommons/idc-index-data#2

It will get the current version of IDC referenced in the index and check if it is outdated wrt to the IDC release referenced by the bigquery-public-data.idc_current.dicom_all view in bigquery. If it is outdated, it will update the version in each of the queries in the queries/ folder of the repo, run them using bigquery, and generate a {query_file_prefix}.csv.zip for each query. It will also update the version in index.py.

It then creates a new release with the 'latest' tag, and uploads the csv.zip files as a release attachment.

Lastly, it will create a pull request to update the SQL queries in the queries/ folder and the index.py

Note: We must create two GitHub secrets called SERVICE_ACCOUNT_KEY and GCP_PROJECT_ID

[vkt1414]

this isn't necessary anymore, crowbarmaster action updates the source code also.

[vkt1414]

following up on yesterday's conversation, the gha actually does what's asked in ImagingDataCommons/idc-index-data#2. However, for reassurance, we can test the updated index before creating a release following similar logic in PR #20

[vkt1414]

Closing this PR as there is CI/CD already now