apd: add race testing and benchmarking to CI

Author: nvb

.github/workflows/go.yml

@@ -35,6 +35,15 @@ jobs:
       - name: 'Test'
         run: go test -v ./...
 
+      - name: 'TestRace'
+        run: go test -race -v ./...
+
+      - name: 'Bench'
+        run: go test -run=- -bench=. -benchtime=1x -v ./...
+
+      - name: 'BenchRace'
+        run: go test -run=- -bench=. -benchtime=1x -race -v ./...
+
       - name: 'Vet'
         # -unsafeptr=false is needed because of the noescape function in bigint.go.
         run: go vet -unsafeptr=false ./...