ci: Started building the CI pipeline with test runner job

.github/workflows/build-and-test.yml

@@ -0,0 +1,32 @@
+name: evm-signer-kms
+
+on:
+  push:
+    branches:
+      - master
+      - feat/**
+      - fix/**
+      - chore/**
+      - ci/**
+
+
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  run-tests:
+    runs-on: ubuntu-latest
+    env:
+      LCOV_OUT: coverage.lcov
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Install llvm-cov for code coverage
+        uses: taiki-e/install-action@cargo-llvm-cov
+
+      - name: Run unit and integration tests and measure coverage
+        run: cargo llvm-cov --lcov --output-path ${{ env.LCOV_OUT }} --lib
+
+      - name: Upload coverage to Codecov
+        run: echo "Not implemented yet"