🩹 [Patch]: Add try/finally blocks (#38)

## Description

This pull request includes changes to the `action.yml` and the addition
of a new script file to improve the robustness and cleanliness of the
GitHub Action's execution.

Improvements to GitHub Action execution:

* `action.yml`: Modified the `run` block to include a `try` block for
executing scripts and a `finally` block to ensure the cleanup script is
always executed. This change enhances the robustness of the script
execution.

Addition of cleanup script:

* `scripts/clean.ps1`: Added a new PowerShell script to handle cleanup
tasks, including logging debug information and resetting environment
variables. This ensures that the environment is properly cleaned up
after the action runs.

## Type of change

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [ ] 📖 [Docs]
- [ ] 🪲 [Fix]
- [x] 🩹 [Patch]
- [ ] ⚠️ [Security fix]
- [ ] 🚀 [Feature]
- [ ] 🌟 [Breaking change]

## Checklist

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas

Author: MariusStorhaug

action.yml

@@ -76,7 +76,12 @@ runs:
         GITHUB_ACTION_INPUT_Prerelease: ${{ inputs.Prerelease }}
       run: |
         # GitHub-Script
-        . ${{ github.action_path }}\scripts\init.ps1
-        . ${{ github.action_path }}\scripts\info.ps1
-        ${{ inputs.Script }}
-        . ${{ github.action_path }}\scripts\outputs.ps1
+        try {
+          ${{ github.action_path }}/scripts/init.ps1
+          ${{ github.action_path }}/scripts/info.ps1
+          ${{ inputs.Script }}
+          ${{ github.action_path }}/scripts/outputs.ps1
+        }
+        finally {
+          ${{ github.action_path }}/scripts/clean.ps1
+        }

scripts/clean.ps1

@@ -0,0 +1,5 @@
+Write-Debug "Cleaning up..."
+Write-Debug "LASTEXITCODE: $LASTEXITCODE"
+Write-Debug "PSMODULE_GITHUB_SCRIPT: $env:PSMODULE_GITHUB_SCRIPT"
+$env:PSMODULE_GITHUB_SCRIPT = $false
+Write-Debug "PSMODULE_GITHUB_SCRIPT: $env:PSMODULE_GITHUB_SCRIPT"