add format check for github

Author: Jan Kaul

.github/workflows/rust.yml

@@ -37,3 +37,7 @@ jobs:
       run: rustup component add clippy
     - name: Run Clippy
       run: make clippy
+    - name: Install Format
+      run: rustup component add rustfmt
+    - name: Run fmt
+      run: make fmt

Makefile

@@ -19,3 +19,5 @@ test-sql-catalog:
 	cargo test -p iceberg-sql-catalog --lib && cargo clean -p iceberg-sql-catalog
 clippy:
 	cargo clippy --all-targets --all-features -- -D warnings
+fmt:
+	cargo fmt --all -- --check