add github workflow and pull request template

.github/pull_request_template.md

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+### What's new?
+[//]: "Describe what's new in a few lines or bullet points. Feel free to add screenshots!"

.github/workflows/compiler.yml

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+---
+name: Compiler
+
+#############################
+# Start the job on push #
+#############################
+on:
+    push:
+        branches-ignore: [main]
+    pull_request:
+        branches: [main]
+
+###############
+# Set the Job #
+###############
+jobs:
+    build:
+        # Name the Job
+        name: Run TypeScript compiler
+        # Set the agent to run on
+        runs-on: ubuntu-latest
+
+        ##################
+        # Load all steps #
+        ##################
+        steps:
+            ##########################
+            # Checkout the code base #
+            ##########################
+            - name: Checkout Code
+              uses: actions/checkout@v3
+              with:
+                  # Full git history is needed to get a proper
+                  # list of changed files within `super-linter`
+                  fetch-depth: 0
+
+            ################################
+            # Install packages #
+            ################################
+            - name: Install packages
+              run: npm ci
+            ################################
+            # Check for TypeScript errors #
+            ################################
+            - name: Run TypeScript compiler (tsc)
+              run: npx tsc --noEmit