* set product version as variable
* use slim version of linter
* use check mode for self-test
* adds copywrite bot config and headers
* bumps `github-actions-core` from `0.2.0` to `0.3.0`
* bumps version to `2.1.0`
Code Quality: Super-Linter / Super-Linter (push) Failing after 0s
Security Scan: Snyk Code / snyk (push) Failing after 2s
Code Quality: TypeScript / Node.js (18.x) (push) Failing after 2s
* updates Actions config
* updates docs
* Remove unused code that was moved to the core library, update to hashicorp version of GHA-Core, which is currently still private
Co-authored-by: Kerim Satirli <k.satirli@gmail.com>
Co-authored-by: Alexey Kulakov <uni_que@me.com>