chore(strapi): upgraded strapi support for v5

* Updated [project structure for v5 support](https://docs.strapi.io/dev-docs/plugins/development/plugin-structure)
* Updated admin interface to utilize new design system and deprecate helper plugin

.gitignore

@@ -1,11 +1,138 @@
-# Don't check auto-generated stuff into git
-coverage
-node_modules
-stats.json
-package-lock.json
+# See https://help.github.com/articles/ignoring-files/ for more about ignoring files.
+
+############################
+# OS X
+############################
 
-# Cruft
 .DS_Store
-npm-debug.log
+.AppleDouble
+.LSOverride
+Icon
+.Spotlight-V100
+.Trashes
+._*
+
+
+############################
+# Linux
+############################
+
+*~
+
+
+############################
+# Windows
+############################
+
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+$RECYCLE.BIN/
+*.cab
+*.msi
+*.msm
+*.msp
+
+
+############################
+# Packages
+############################
+
+*.7z
+*.csv
+*.dat
+*.dmg
+*.gz
+*.iso
+*.jar
+*.rar
+*.tar
+*.zip
+*.com
+*.class
+*.dll
+*.exe
+*.o
+*.seed
+*.so
+*.swo
+*.swp
+*.swn
+*.swm
+*.out
+*.pid
+
+
+############################
+# Logs and databases
+############################
+
+.tmp
+*.log
+*.sql
+*.sqlite
+*.sqlite3
+
+
+############################
+# Misc.
+############################
+
+*#
+ssl
 .idea
-dist/
+nbproject
+.tsbuildinfo
+.eslintcache
+.env
+
+
+############################
+# Strapi
+############################
+
+public/uploads/*
+!public/uploads/.gitkeep
+
+
+############################
+# Build
+############################
+
+dist
+build
+
+
+############################
+# Node.js
+############################
+
+lib-cov
+lcov.info
+pids
+logs
+results
+node_modules
+.node_history
+
+
+############################
+# Package managers
+############################
+
+.yarn/*
+!.yarn/cache
+!.yarn/unplugged
+!.yarn/patches
+!.yarn/releases
+!.yarn/sdks
+!.yarn/versions
+.pnp.*
+yarn-error.log
+
+
+############################
+# Tests
+############################
+
+coverage

admin/custom.d.ts

@@ -0,0 +1,2 @@
+declare module '@strapi/design-system/*';
+declare module '@strapi/design-system';

admin/src/components/Initializer/index.tsx → admin/src/components/Initializer.tsx

@@ -5,7 +5,7 @@
  */
 
 import { useEffect, useRef } from 'react';
-import pluginId from '../../pluginId';
+import pluginId from '../pluginId';
 
 type InitializerProps = {
   setPlugin: (id: string) => void;
@@ -21,4 +21,4 @@ const Initializer = ({ setPlugin }: InitializerProps) => {
   return null;
 };
 
-export default Initializer;
+export {Initializer};

admin/src/components/MediaLib.tsx

@@ -0,0 +1,61 @@
+import {FC as FunctionComponent} from 'react';
+
+import {useStrapiApp} from '@strapi/admin/strapi-admin';
+import type {Schema} from '@strapi/types';
+
+
+const prefixFileUrlWithBackendUrl = (fileURL: string) => {
+  return !!fileURL &&
+    fileURL.startsWith('/') &&
+    'strapi' in window &&
+    window.strapi instanceof Object &&
+    'backendURL' in window.strapi &&
+    window.strapi.backendURL ?
+    `${window.strapi.backendURL}${fileURL}` :
+    fileURL;
+};
+
+interface MediaLibComponentProps {
+  isOpen: boolean,
+  onChange: (files: Schema.Attribute.MediaValue<true>) => void,
+  onToggle: () => void,
+}
+
+const MediaLib: FunctionComponent<MediaLibComponentProps> = ({
+  isOpen,
+  onChange,
+  onToggle,
+}) => {
+  const components = useStrapiApp('ImageDialog', (state) => state.components);
+  if (!components || !isOpen) return null;
+
+  const MediaLibraryDialog = components['media-library'] as FunctionComponent<{
+    onClose: () => void,
+    onSelectAssets: (_images: Schema.Attribute.MediaValue<true>) => void,
+  }>;
+
+  const handleSelectAssets = (files: Schema.Attribute.MediaValue<true>) => {
+    const formattedFiles = files.map((f) => ({
+      alt: f.alternativeText || f.name,
+      url: prefixFileUrlWithBackendUrl(f.url),
+      mime: f.mime,
+    }));
+
+    onChange(formattedFiles);
+  };
+
+  return (
+    <MediaLibraryDialog
+      onClose={onToggle}
+      onSelectAssets={handleSelectAssets}
+    />
+  );
+};
+
+MediaLib.defaultProps = {
+  isOpen: false,
+  onChange: (_files: Schema.Attribute.MediaValue<true>) => {},
+  onToggle: () => {},
+};
+
+export {MediaLib};