chore: add CI and issue templates

.github/workflows/ci.yaml

@@ -0,0 +1,47 @@
+name: CI
+on:
+  pull_request:
+  push:
+env:
+  DATABASE_URL: postgresql://georm:georm@postgres:5432/georm
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: ${{ github.ref != 'ref/heads/master' }}
+
+jobs:
+  tests:
+    runs-on: ubuntu-latest
+    container:
+      image: catthehacker/ubuntu:js-latest
+      options: --security-opt seccomp=unconfined
+    permissions:
+      pull-requests: write
+    services:
+      postgres:
+        image: postgres:16-alpine
+        env:
+          POSTGRES_PASSWORD: georm
+          POSTGRES_USER: georm
+          POSTGRES_DB: georm
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 10s
+          --health-retries 5
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Nix
+        uses: cachix/install-nix-action@v27
+        with:
+          nix_path: nixpkgs=channel:nixos-unstable
+      - name: Migrate database
+        run: nix develop --command -- just migrate
+      - name: Formatting check
+        run: nix develop --command -- just format-check
+      - name: Lint
+        run: nix develop --command -- just lint
+      - name: Audit
+        run: nix develop --command -- just audit
+      - name: Tests
+        run: nix develop --command -- just test