workflow: setup basic workflow for checking PRs

* Sets up a workflow that will take care of code formatting in PRs
* Create license_config.yml
* Create license_check.yml
* Add coding guidelines check as well

taken from zephyrproject upstream

Signed-off-by: Dhruva Gole <d-gole@ti.com>

Author: DhruvaG2000

.github/license_config.yml

@@ -0,0 +1,16 @@
+license:
+  main: apache-2.0
+  report_missing: true
+  category: Permissive
+copyright:
+  check: true
+exclude:
+  extensions:
+    - yml
+    - yaml
+    - html
+    - rst
+    - conf
+    - cfg
+  langs:
+    - HTML

.github/workflows/checkpatch.yml

@@ -0,0 +1,29 @@
+# This is a basic workflow to help you get started with Actions
+
+name: CI
+
+# Controls when the workflow will run
+on:
+  # Triggers the workflow on push or pull request events but only for the "main" branch
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# A workflow run is made up of one or more jobs that can run sequentially or in parallel
+jobs:
+  # This workflow contains a single job called "build"
+  build:
+    # The type of runner that the job will run on
+    runs-on: ubuntu-latest
+
+    # Steps represent a sequence of tasks that will be executed as part of the job
+    steps:
+      # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
+      - uses: actions/checkout@v3
+      - name: checkpatch.pl PR review
+        uses: webispy/checkpatch-action@v8
+

.github/workflows/coding_guidelines.yml

@@ -0,0 +1,61 @@
+name: Coding Guidelines
+
+on: pull_request
+
+jobs:
+  compliance_job:
+    runs-on: ubuntu-20.04
+    name: Run coding guidelines checks on patch series (PR)
+    steps:
+    - name: Checkout the code
+      uses: actions/checkout@v2
+      with:
+        ref: ${{ github.event.pull_request.head.sha }}
+        fetch-depth: 0
+
+    - name: cache-pip
+      uses: actions/cache@v1
+      with:
+        path: ~/.cache/pip
+        key: ${{ runner.os }}-doc-pip
+
+    - name: Install python dependencies
+      run: |
+        pip3 install unidiff
+        pip3 install wheel
+        pip3 install sh
+
+    - name: Install Packages
+      run: |
+        sudo apt-get update
+        sudo apt-get install ocaml-base-nox
+        wget https://launchpad.net/~npalix/+archive/ubuntu/coccinelle/+files/coccinelle_1.0.8~20.04npalix1_amd64.deb
+        sudo dpkg -i coccinelle_1.0.8~20.04npalix1_amd64.deb
+
+    - name: Run Coding Guildeines Checks
+      continue-on-error: true
+      id: coding_guidelines
+      env:
+        BASE_REF: ${{ github.base_ref }}
+      run: |
+        export ZEPHYR_BASE=$PWD
+        git config --global user.email "actions@zephyrproject.org"
+        git config --global user.name "Github Actions"
+        git remote -v
+        git rebase origin/${BASE_REF}
+        source zephyr-env.sh
+        # debug
+        ls -la
+        git log  --pretty=oneline | head -n 10
+        ./scripts/ci/guideline_check.py --output output.txt -c origin/${BASE_REF}..
+
+    - name: check-warns
+      run: |
+        if [[ -s "output.txt" ]]; then
+            errors=$(cat output.txt)
+            errors="${errors//'%'/'%25'}"
+            errors="${errors//$'\n'/'%0A'}"
+            errors="${errors//$'\r'/'%0D'}"
+            echo "::error file=output.txt::$errors"
+            exit 1;
+        fi

.github/workflows/license_check.yml

@@ -0,0 +1,32 @@
+name: Scancode
+
+on: [pull_request]
+
+jobs:
+  scancode_job:
+    runs-on: ubuntu-20.04
+    name: Scan code for licenses
+    steps:
+    - name: Checkout the code
+      uses: actions/checkout@v1
+    - name: Scan the code
+      id: scancode
+      uses: zephyrproject-rtos/action_scancode@v4
+      with:
+        directory-to-scan: 'scan/'
+    - name: Artifact Upload
+      uses: actions/upload-artifact@v1
+      with:
+        name: scancode
+        path: ./artifacts
+
+    - name: Verify
+      run: |
+        if [ -s ./artifacts/report.txt ]; then
+          report=$(cat ./artifacts/report.txt)
+          report="${report//'%'/'%25'}"
+          report="${report//$'\n'/'%0A'}"
+          report="${report//$'\r'/'%0D'}"
+          echo "::error file=./artifacts/report.txt::$report"
+          exit 1
+        fi