feat(ci): add rv32im compilation checks (#12925)

.github/workflows/lint.yml

@@ -75,6 +75,22 @@ jobs:
       - name: Run Wasm checks
         run: .github/assets/check_wasm.sh
 
+  riscv:
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@stable
+        with:
+          target: riscv32imac-unknown-none-elf
+      - uses: taiki-e/install-action@cargo-hack
+      - uses: Swatinem/rust-cache@v2
+        with:
+          cache-on-failure: true
+      - uses: dcarbone/install-jq-action@v3
+      - name: Run RISC-V checks
+        run: .github/assets/check_rv32imac.sh
+
   crate-checks:
     runs-on: ubuntu-latest
     timeout-minutes: 30