Add Nethermind integration tests (#3100)

## Proposed Changes

Extend the current Geth merge integration tests to support Nethermind.

.github/workflows/test-suite.yml

@@ -213,6 +213,9 @@ jobs:
     - uses: actions/setup-go@v2
       with:
         go-version: '1.17'
+    - uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: '6.0.201'
     - name: Get latest version of stable Rust
       run: rustup update stable
     - name: Run exec engine integration tests in release