ci(perf): run benchmarks via module (python -m sup.tools.benchmarks)

Author: Karthikprasadm

.github/workflows/ci.yml

@@ -74,10 +74,10 @@ jobs:
           python -c "import sup, sys; print('sup import ok', sup.__version__)"
       - name: Run benchmarks
         run: |
-          python sup-lang/sup/tools/benchmarks.py --case arith_loop --iters 5 --json --out perf.json
+          python -m sup.tools.benchmarks --case arith_loop --iters 5 --json --out perf.json
       - name: Enforce performance budgets
         run: |
-          python sup-lang/sup/tools/bench_gates.py
+          python -m sup.tools.bench_gates
       - name: Upload artifact
         uses: actions/upload-artifact@v4
         with: