- [x] add ability to authenticate with GitHub App Installation
- [x] add tests for GitHub App Installation
- [x] add more tests for env vars

repo updates to match standards:

- [x] alphabetize :allthethings:
- [x] add requirements-test.txt to version our testing dependencies
- [x] update Makefile to point linting commands to our linter configs
      that the GitHub Action workflows use
- [x] add linter configs
- [x] add checkov exemptions to Dockerfile
  - custom user - can't do, need root for GitHub action workspace access
- [x] update README, splitting authentication section
- [x] change .pylintrc to .python-lint (pylint default config file)
- [x] updated all examples to default to read contents permissions
- [x] linted files

I'd highly suggest this be a major version change as there are breaking changes:

- [x] standardize boolean environment variables (true or false)
- [x] drop GITHUB_SERVER_URL and instead use GITHUB_ENTERPRISE_URL for enterprise
      customers (matches our other repos)

Signed-off-by: jmeridth <[email protected]>

Co-authored-by: Zack Koppert <[email protected]>

more to come

Signed-off-by: jmeridth <[email protected]>

Signed-off-by: jmeridth <[email protected]>

Signed-off-by: jmeridth <[email protected]>

Signed-off-by: jmeridth <[email protected]>

replace comments with variables, causes ensured maintenance of meaning

Signed-off-by: jmeridth <[email protected]>

Signed-off-by: jmeridth <[email protected]>

Signed-off-by: jmeridth <[email protected]>

Signed-off-by: jmeridth <[email protected]>

- will reassess later

Signed-off-by: jmeridth <[email protected]>