refactor: create go.mod for store (#14746)

Co-authored-by: Marko <marbar3778@yahoo.com>

.github/workflows/test.yml

@@ -582,6 +582,36 @@ jobs:
         with:
           projectBaseDir: tools/hubl/
 
+  test-store:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-go@v3
+        with:
+          go-version: 1.19.4
+          cache: true
+          cache-dependency-path: store/go.sum
+      - uses: technote-space/get-diff-action@v6.1.2
+        id: git_diff
+        with:
+          PATTERNS: |
+            store/**/*.go
+            store/go.mod
+            store/go.sum
+      - name: tests
+        if: env.GIT_DIFF
+        run: |
+          cd store
+          go test -mod=readonly -timeout 30m -coverprofile=coverage.out -covermode=atomic -tags='norace ledger test_ledger_mock rocksdb_build' ./...
+      - name: sonarcloud
+        if: ${{ env.GIT_DIFF && !github.event.pull_request.draft }}
+        uses: SonarSource/sonarcloud-github-action@master
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          SONAR_TOKEN: ${{ secrets.SONAR_TOKEN }}
+        with:
+          projectBaseDir: store/
+
   #############################
   ### Cosmos SDK x/{module} ###
   #############################