Add pre-commit setup

- Add pre-commit hooks
- Add github action to enforce pre-commit setup

For any hooks required for a 'sub project', for
instance the UI. It will be possible to create custom hooks,
and call some package scripts in the package.json file.

Fixes #1208

.codespellignore

@@ -0,0 +1,2 @@
+hda
+HDA

.github/workflows/lint.yml

@@ -0,0 +1,14 @@
+name: lint
+
+on:
+  pull_request:
+  push:
+    branches: [master]
+
+jobs:
+  pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v2
+      - uses: pre-commit/action@v2

.pre-commit-config.yaml

@@ -0,0 +1,50 @@
+---
+# See https://pre-commit.com for more information
+# See https://pre-commit.com/hooks.html for more hooks
+exclude: ^(airtime_mvc.*)$
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.0.1
+    hooks:
+      - id: check-added-large-files
+      - id: check-case-conflict
+      - id: check-executables-have-shebangs
+      - id: check-shebang-scripts-are-executable
+      - id: check-symlinks
+      - id: destroyed-symlinks
+
+      - id: check-json
+      - id: check-yaml
+      - id: check-yaml
+      - id: check-toml
+
+      - id: check-merge-conflict
+      - id: end-of-file-fixer
+      - id: mixed-line-ending
+      - id: trailing-whitespace
+
+      - id: fix-encoding-pragma
+      - id: requirements-txt-fixer
+      - id: name-tests-test
+
+  - repo: https://github.com/pre-commit/mirrors-prettier
+    rev: v2.3.0
+    hooks:
+      - id: prettier
+        files: \.(md|yml|yaml|json)$
+
+  - repo: https://github.com/psf/black
+    rev: 21.5b1
+    hooks:
+      - id: black
+
+  - repo: https://github.com/pre-commit/mirrors-pylint
+    rev: v3.0.0a3
+    hooks:
+      - id: pylint
+
+  - repo: https://github.com/codespell-project/codespell
+    rev: v2.0.0
+    hooks:
+      - id: codespell
+        args: [--ignore-words=.codespellignore]