chore: add GitHub action for ODH Notebook Controller unit tests

This commit introduces a new GitHub action workflow specifically for running unit tests against the ODH Notebook Controller. It's configured to run on both push and pull requests events, ensuring that all code changes are thoroughly tested.

Author: jiridanek

.github/workflows/notebook_controller_unit_test.yaml

@@ -23,4 +23,4 @@ jobs:
     - name: Run unit tests
       run: |
         cd components/notebook-controller
-        make test
+        make test

.github/workflows/odh_notebook_controller_unit_test.yaml

@@ -0,0 +1,26 @@
+name: Run ODH Notebook Controller unit tests
+on:
+  push:
+  pull_request:
+    paths:
+      - components/odh-notebook-controller/**
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - name: Install Go
+      uses: actions/setup-go@v5
+      with:
+        check-latest: true
+        go-version-file: components/odh-notebook-controller/go.mod
+        cache-dependency-path: components/odh-notebook-controller/go.sum
+
+    - name: Run unit tests
+      run: |
+        cd components/odh-notebook-controller
+        make test