Add github actions (#1125)

.github/workflows/pull.yaml

@@ -0,0 +1,59 @@
+name: PR testing
+
+on: [pull_request]
+
+jobs:
+  lint-custom:
+    runs-on: ubuntu-latest
+    container: jesserockz/esphome-lint
+    name: Lint Custom
+    steps:
+    - uses: actions/checkout@v2
+    - run: script/setup
+    - run: script/ci-custom.py
+  lint-python:
+    runs-on: ubuntu-latest
+    container: jesserockz/esphome-lint
+    name: Lint Python
+    steps:
+    - uses: actions/checkout@v2
+    - run: script/setup
+    - run: script/lint-python
+  lint-tidy:
+    runs-on: ubuntu-latest
+    container: jesserockz/esphome-lint
+    name: Lint Tidy
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - run: script/setup
+    - run: pio init --ide atom
+    - run: script/clang-tidy --all-headers --fix
+    - run: script/ci-suggest-changes
+  lint-format:
+    runs-on: ubuntu-latest
+    container: jesserockz/esphome-lint
+    name: Lint Format
+    steps:
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+    - run: script/setup
+    - run: script/clang-format -i
+    - run: script/ci-suggest-changes
+
+  test:
+    runs-on: ubuntu-latest
+    container: jesserockz/esphome-lint
+    strategy:
+      matrix:
+        test:
+        - test1
+        - test2
+        - test3
+        - test4
+    steps:
+    - uses: actions/checkout@v2
+    - run: script/setup
+    - run: esphome tests/${{ matrix.test }}.yaml compile