Enable clang-tidy-11

Adds clang-tidy-11 as an option. Thanks to @ghutchis

Minor fix: handle "no newline at end of file"

Diffs can contain "No newline at end of file" which needs special handling when constructing the lookup table

Two minor bug fixes

• Don't try to create comments on files not in the PR
• Exit early if the PR only removes lines

Avoid apt warning when building

Uses apt-get instead of apt to install packages to avoid warning about apt not having a stable CLI

Fixes for passing include/exclude arguments

Previously it was tricking to pass through quoted arguments for the include/exclude options as they passed through GitHub Actions, then Docker, then bash, then finally Python. They should now work properly

Limit maximum comments posted at one time

It seems the GitHub API might only accept a limited number of comments at once, so clang-tidy-review will only attempt to post the first max_comments of them (default 25, as this has worked for me).

Fixes for larger projects

• Replace absolute paths in compile_commands.json if it exists
  • Needed due to container-based Actions being mounted in a different location, and clang-tidy not accepting relative paths
• Add argument to install additional apt packages
  • Needed to bring in headers for third-party dependencies
• Fix for PRs with multiple files
• Fix for whitespace in code-blocks in comments

Replace curl with requests

v0.2.0

Update README and add license info

Initial release - v0.1.0

Initial release, may be some things to iron out still