Removing Eclint

[steinsiv]

We need to replace ECLint that validates our staged files during the pre-commit hook. The main reason being that the project has been discontinued and archived over 2 years ago.

It would be nice to keep the pre-commit hook using another tool - any tips, advise and cautions are welcomed. First party analysers are now included and enabled by default in .Net5 SDK (locally for .editorconfig aware editors)

Husky will still trigger lint-staged with Eslint and Prettier on the frontend. No changes there.