Update Shell Tasks to match ScriptHandlerHelpers (#575)

* Update Shell Tasks to match ScriptHandlerHelpers
Code: https://github.com/actions/runner/blob/main/src/Runner.Worker/Handlers/ScriptHandlerHelpers.cs

Docs: https://docs.github.com/en/actions/reference/workflow-syntax-for-github-actions#using-a-specific-shell

Fixes #467

* 🩹 Remove old ps1 handler

* ♻️ gocritix fix

* 🐛 Powershell command must be a single entry to docker API
Fixes #467

* Remove Act Temp

* Remove additional Act Directories

* remove hard-coded workdir

Co-authored-by: Casey Lee <cplee@nektos.com>

pkg/runner/testdata/powershell/push.yml

@@ -0,0 +1,12 @@
+name: powershell
+on: push
+
+env:
+  TEST: value
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - shell: pwsh
+        run: |
+          echo "hello test"