Add Accordion web part implementation with dynamic SharePoint list integration

- Created Accordion web part with SPFx 1.4.1 framework.
- Implemented dynamic loading of SharePoint lists and fields.
- Added configuration options for title, content, and category fields.
- Included support for multiple open sections and initial state settings.
- Developed HTML sanitizer for rich text content.
- Implemented accessible accordion UI with category grouping.
- Added localization support for English and German languages.
- Created necessary configuration files for deployment and asset management.
- Added validation script to ensure project compliance with standards.

config/config.json

@@ -0,0 +1,17 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/spfx-build/config.2.0.schema.json",
+  "version": "2.0",
+  "bundles": {
+    "accordion-web-part": {
+      "components": [{
+        "entrypoint": "./lib/webparts/accordion/AccordionWebPart.js",
+        "manifest": "./src/webparts/accordion/AccordionWebPart.manifest.json"
+      }]
+    }
+  },
+  "externals": {},
+  "localizedResources": {
+    "AccordionWebPartStrings": "lib/webparts/accordion/loc/{locale}.js"
+  }
+}
+

config/copy-assets.json

@@ -0,0 +1,5 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/spfx-build/copy-assets.schema.json",
+  "deployCdnPath": "temp/deploy"
+}
+

config/package-solution.json

@@ -0,0 +1,15 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/spfx-build/package-solution.schema.json",
+  "solution": {
+    "name": "accordion-client-side-solution",
+    "title": "Accordion",
+    "id": "27a6fd90-42a1-4e39-8862-08ed0e7803bc",
+    "version": "1.0.0.0",
+    "includeClientSideAssets": true,
+    "skipFeatureDeployment": true
+  },
+  "paths": {
+    "zippedPackage": "solution/accordion.sppkg"
+  }
+}
+

config/serve.json

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+{
+  "$schema": "https://developer.microsoft.com/json-schemas/core-build/serve.schema.json",
+  "port": 4321,
+  "https": true,
+  "initialPage": "https://localhost:5432/workbench",
+  "api": {
+    "port": 5432,
+    "entryPath": "node_modules/@microsoft/sp-webpart-workbench/lib/api/"
+  }
+}
+

config/write-manifests.json

@@ -0,0 +1,5 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/spfx-build/write-manifests.schema.json",
+  "cdnBasePath": "<!-- PATH TO CDN -->"
+}
+