🌟 [Major]: Module folder restructure to support variables (#41)

## Description

- Update flow diagram.
- Restructure expected module folder structure.
- variables established under `variables` with a separate `private` and
`public` folders.
- To comply to the same structure, adjusted `classes` and `functions` to
the same structure.
- items under the `public` folders will be exported, the others are kept
in the module scope.
- Swap to use `GitHub-Script@v1`, instead of pure inline scripts. 

## Type of change

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

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

.github/dependabot.yml

@@ -9,7 +9,3 @@ updates:
     directory: / # Location of package manifests
     schedule:
       interval: weekly
-  - package-ecosystem: nuget # See documentation for possible values
-    directory: / # Location of package manifests
-    schedule:
-      interval: weekly

.github/workflows/CI.yml

@@ -9,7 +9,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
-  contents: write
+  contents: read
   pull-requests: write
   statuses: write
 

.github/workflows/Workflow-Test-Default-CI.yml

@@ -9,7 +9,7 @@ concurrency:
   cancel-in-progress: true
 
 permissions:
-  contents: write
+  contents: read
   pull-requests: write
   statuses: write
 
@@ -22,4 +22,4 @@ jobs:
       Path: tests/srcWithManifest
       ModulesOutputPath: tests/outputs/modules
       DocsOutputPath: tests/outputs/docs
-      SkipTests: Desktop, Linux
+      SkipTests: Linux

.github/workflows/Workflow-Test-WithManifest-CI.yml

@@ -25,4 +25,4 @@ jobs:
       ModulesOutputPath: tests/outputs/modules
       DocsOutputPath: tests/outputs/docs
       TestProcess: true
-      SkipTests: Desktop, Linux
+      SkipTests: Linux