Add a common-polyglot-core-utils project

[radeusgd]

Pull Request Description

Adds a common project that allows sharing code between the runtime and std-bits.

Due to classpath separation and the way it is compiled, the classes will be duplicated - we will have one copy for the runtime classpath and another copy as a small JAR for Standard.Base library.

This is still much better than having the code duplicated - now at least we have a single source of truth for the shared implementations.

Due to the copying we should not expand this project too much, but I encourage to put here any methods that would otherwise require us to copy the code itself.

This may be a good place to put parts of the hashing logic to then allow sharing the logic between the runtime and the MultiValueKey in the Table library (cc: @Akirathan).

Important Notes

Checklist

Please include the following checklist in your PR:

• The documentation has been updated if necessary.
• All code conforms to the
  Scala,
  Java,
  and
  Rust
  style guides.
• All code has been tested:
  • Unit tests have been written where possible.
  • If GUI codebase was changed: Enso GUI was tested when built using BOTH
    ./run ide build and ./run ide watch.

[Akirathan]

Could you please add package-info.java to lib/scala/common-polyglot-core-utils/src/main/java/org/enso/polyglot/common_utils and copy some of the description in this PR there? Could be a useful future reference.