[MPTWG] Update CI for MPTWG (#1591)

### Description

Enable the MPT witness generator CI check

### Issue Link


### Type of change

Bug fix (non-breaking change which fixes an issue)

### Contents

- Run Go build and Go format on MPTWG
- Ignore main tests CI run if no change on zkevm-circuits
- Ignore MPTWG CI run if no change on MPTWG

### Rationale

We want to enable automatic checks on MPTWG

.github/workflows/lints.yml

@@ -20,7 +20,7 @@ jobs:
         with:
           cancel_others: 'true'
           concurrent_skipping: 'same_content_newer'
-          paths_ignore: '["**/README.md"]'
+          paths_ignore: '["**/README.md", "mpt-witness-generator/**"]'
 
   lints:
     needs: [skip_check]

.github/workflows/mpt-witness-generator.yml

@@ -0,0 +1,49 @@
+name: MPT Witness Generator Checks
+
+on:
+  merge_group:
+  pull_request:
+    types: [synchronize, opened, reopened, ready_for_review]
+  push:
+    branches:
+      - main
+
+jobs:
+  skip_check:
+    runs-on: ubuntu-latest
+    outputs:
+      should_skip: ${{ steps.skip_check.outputs.should_skip }}
+    steps:
+      - id: skip_check
+        uses: fkirc/skip-duplicate-actions@v5
+        with:
+          cancel_others: 'true'
+          concurrent_skipping: 'same_content_newer'
+          paths: '["mpt-witness-generator/**"]'
+
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v4
+      with:
+        go-version: '1.20'
+
+    - name: Format
+      uses: Jerome1337/gofmt-action@v1.0.5
+      with:
+        gofmt-path: './mpt-witness-generator'
+        gofmt-flags: '-l -d'
+
+    - name: Build
+      working-directory: ./mpt-witness-generator
+      run: go build -v ./...
+
+    - name: Test
+      working-directory: ./mpt-witness-generator
+      env:
+        NO_GETH: true
+      run: go test -v ./...