Feature: Add lint-staged

[f3rno64]

lint-staged is a wonderful tool that runs linters and formatters on staged files. This speeds up the commit processes, as only the files that have actually changed get linted and formatted.

Integrate lint-staged; execute it with husky and run markdownlint for markdown files, stylelint for stylesheets, yamllint and yamlfmt for yaml files, and finally commitlint with a conventional-commit config to lint commit messages and ensure they adhere to the conventional commit format.