feat: add lefthook, megalinter and update editorconfig (#270)

This change adds [LeftHook](https://lefthook.dev/) as a GitHub hook management tool alongside [MegaLinter](https://megalinter.io/) to lint all relevant files within the repository.

For users that don't end up installing LeftHook for pre-commit hooks, megalinter picks up the necessary formatting changes and reports them.

* feat: add lefthook, megalinter and update editorconfig
* fix: lint commit ordering
* refactor: adjust megalinter reporters
* refactor: adjust description for cache domains
* refactor: single - for passing options
* refactor: add repo-specific fmt in megalinter pre-commands too

.github/workflows/mega-linter.yml

@@ -0,0 +1,55 @@
+# MegaLinter GitHub Action configuration file
+# More info at https://megalinter.io
+---
+name: MegaLinter
+
+on:
+  pull_request:
+    branches:
+      - master
+
+env:
+  GITHUB_STATUS_REPORTER: true
+
+concurrency:
+  group: ${{ github.ref }}-${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  megalinter:
+    name: MegaLinter
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: write
+      issues: write
+      pull-requests: write
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+        with:
+          token: ${{ secrets.PAT || secrets.GITHUB_TOKEN }}
+          fetch-depth: 0
+
+      - name: MegaLinter
+        uses: oxsecurity/megalinter@v8
+        id: ml
+        env:
+          VALIDATE_ALL_CODEBASE: >-
+            ${{
+              github.event_name == 'push' &&
+              github.ref == 'refs/heads/master'
+            }}
+
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Archive production artifacts
+        uses: actions/upload-artifact@v4
+        if: success() || failure()
+        with:
+          name: MegaLinter reports
+          include-hidden-files: "true"
+          path: |
+            megalinter-reports
+            mega-linter.log