Add getAddActivityPrePopulate handler and implement prepopulate data retrieval

- Introduced a new handler for adding activity prepopulation.
- Enhanced the PrePopulateService to fetch all necessary prepopulate data for the new activity.
- Updated the updateBankDetails handler to correctly inject host ID.
- Improved user data retrieval in HostService to include additional fields.
- Added validation for host ID in showSuggestionToAM handler.

serverless/functions/prepopulate.yml

@@ -91,4 +91,19 @@ getFrequenciesOfActivity:
   events:
     - httpApi:
         path: /prepopulate/get-all-Frequencies
-        method: get
+        method: get
+
+getAddActivityPrePopulate:
+  handler: src/modules/prepopulate/handlers/getAddActivityPrePopulate.handler
+  memorySize: 384
+  package:
+    patterns:
+      - 'src/modules/prepopulate/**'
+      - ${file(./serverless/patterns/base.yml):pattern1}
+      - ${file(./serverless/patterns/base.yml):pattern2}
+      - ${file(./serverless/patterns/base.yml):pattern3}
+      - ${file(./serverless/patterns/base.yml):pattern4}
+  events:
+    - httpApi:
+        path: /prepopulate/get-add-activity-prepopulate
+        method: get