Adds pre-commit checks

Author: kenorb

.github/workflows/check.yml

@@ -0,0 +1,14 @@
+---
+name: Check
+
+on:
+  pull_request:
+  push:
+
+jobs:
+  Pre-commit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v1
+      - uses: pre-commit/[email protected]

.pre-commit-config.yaml

@@ -0,0 +1,29 @@
+---
+repos:
+
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v3.1.0
+    hooks:
+      - id: check-added-large-files
+      - id: check-ast
+      - id: check-byte-order-marker
+      - id: check-case-conflict
+      - id: check-docstring-first
+      - id: check-executables-have-shebangs
+      - id: check-json
+      - id: check-merge-conflict
+      - id: check-yaml
+      - id: end-of-file-fixer
+      - id: sort-simple-yaml
+      - id: trailing-whitespace
+
+  - repo: https://github.com/igorshubovych/markdownlint-cli.git
+    rev: v0.23.1
+    hooks:
+      - id: markdownlint
+
+  - repo: https://github.com/adrienverge/yamllint.git
+    rev: v1.23.0
+    hooks:
+      - id: yamllint
+        args: ["-c", ".yamllint", "-s"]