Feature/v2/googleDrive (#4592)

Google drive oss. Shouldn't have any effect on pr deployment. 
Mainly the removal of the old integration via backend.
I have added the picker service and lazy loading of the required google
dependency scripts when the necessary environment variables have been
implemented.

---------

Co-authored-by: Connor Yoh <[email protected]>
Co-authored-by: James Brunton <[email protected]>

frontend/src/contexts/FileManagerContext.tsx

@@ -39,6 +39,7 @@ interface FileManagerContextValue {
   onAddToRecents: (file: StirlingFileStub) => void;
   onUnzipFile: (file: StirlingFileStub) => Promise<void>;
   onNewFilesSelect: (files: File[]) => void;
+  onGoogleDriveSelect: (files: File[]) => void;
 
   // External props
   recentFiles: StirlingFileStub[];
@@ -546,6 +547,19 @@ export const FileManagerProvider: React.FC<FileManagerProviderProps> = ({
     }
   }, [refreshRecentFiles]);
 
+  const handleGoogleDriveSelect = useCallback(async (files: File[]) => {
+    if (files.length > 0) {
+      try {
+        // Process Google Drive files same as local files
+        onNewFilesSelect(files);
+        await refreshRecentFiles();
+        onClose();
+      } catch (error) {
+        console.error('Failed to process Google Drive files:', error);
+      }
+    }
+  }, [onNewFilesSelect, refreshRecentFiles, onClose]);
+
   const handleUnzipFile = useCallback(async (file: StirlingFileStub) => {
     try {
       // Load the full file from storage
@@ -623,6 +637,7 @@ export const FileManagerProvider: React.FC<FileManagerProviderProps> = ({
     onAddToRecents: handleAddToRecents,
     onUnzipFile: handleUnzipFile,
     onNewFilesSelect,
+    onGoogleDriveSelect: handleGoogleDriveSelect,
 
     // External props
     recentFiles,
@@ -656,6 +671,7 @@ export const FileManagerProvider: React.FC<FileManagerProviderProps> = ({
     handleAddToRecents,
     handleUnzipFile,
     onNewFilesSelect,
+    handleGoogleDriveSelect,
     recentFiles,
     isFileSupported,
     modalHeight,