feat: add projectKey input for Test Manager

Add input projectKey to enable running tests as transient test cases in
Test Manager according to UiPath [docs](https://docs.uipath.com/cicd-integrations/standalone/2025.10/user-guide/testing-a-packagerunning-a-test-set-in-test-manager#usage-examples%E2%80%8B)

Closes #24

Author: mikael-andersson91

action.yml

@@ -30,6 +30,9 @@ inputs:
   retryCount:
     description: 'Number of retries for failed test cases (by default, no retry is set).'
     required: false
+  projectKey:
+    description: 'Project key in Test Manager. (Required if using Test Manager parameters)'
+    required: false
 outputs:
   testExecutionLinks:
     description: 'Outputs a comma-separated list of Orchestrator links for viewing test results'
@@ -101,17 +104,28 @@ runs:
         folderId=$(echo "$responseBody" | jq -r '.value[0].Id')
         echo "folderId=$folderId" >> $GITHUB_OUTPUT
 
-    - id: set_retry_count
-      name: Set retry count
+    - id: set_additional_parameters
+      name: Set additional parameters
       shell: bash
       run: |
+        retryCountParam=""
+        projectKeyParam=""
         if [ -z "${{ inputs.retryCount }}" ]; then
           echo "No retry count provided. Defaulting to 0."
         else
-          echo "retryCount=--retryCount ${{ inputs.retryCount }}" >> $GITHUB_OUTPUT
+          retryCountParam="--retryCount ${{ inputs.retryCount }}"
           echo "Retry count set to ${{ inputs.retryCount }}"
         fi
 
+        if [ -z "${{ inputs.projectKey }}" ]; then
+          echo "No Test Manager project key provided."
+        else
+          projectKeyParam="--projectKey ${{ inputs.projectKey }}"
+          echo "Project key set to ${{ inputs.projectKey }}"
+        fi
+
+        echo "additionalParameters=$retryCountParam $projectKeyParam" >> $GITHUB_OUTPUT
+
     - id: run_tests
       name: Test
       shell: bash
@@ -160,7 +174,7 @@ runs:
                 --result_path "$testResultFilePath" \
                 --language en-US \
                 --traceLevel "Warning" \
-                ${{ steps.set_retry_count.outputs.retryCount }}
+                ${{ steps.set_additional_parameters.outputs.additionalParameters }}
 
               if [ $? -ne 0 ]; then
                 testsFailed=1