Include checks for offline queries in CI

Author: tpoliaw

.github/workflows/ci.yml

@@ -27,6 +27,21 @@ jobs:
         cargo clippy --version
         cargo clippy --all-targets --all-features -- --deny warnings
 
+  sqlx_offline:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: dtolnay/rust-toolchain@stable
+      with:
+          toolchain: stable
+    - uses: Swatinem/rust-cache@v2
+    - name: Check Prepared Queries
+      script:
+        - cargo install --locked sqlx-cli
+        - touch numtracker.db
+        - cargo sqlx migrate run
+        - cargo sqlx prepare --check
+
   test:
     runs-on: ubuntu-latest
     steps: