Wip backend (#4)

* feat: Add new API handlers for user, project, and task management; update package dependencies

* feat: Update .gitignore, add Lambda layer configuration, and refactor DynamoDB handlers to use AWS SDK v3

* feat: Update serverless configuration and refactor API handlers to improve error handling and response structure

* feat: Add Cognito user pool name parameter and update API handlers to include CORS headers

* feat: Update task and project ID formats, add populateSeedData function, and enhance user ID handling

* feat: Update image source paths to use S3 public URL for profile and task attachments

.gitignore

@@ -22,7 +22,13 @@
 **/next-env.d.ts
 
 # images
-**/public/**
+tasker-client/public/**
 
 # terraform
-**/**/.terraform**
+**/.terraform**
+
+# serverless
+**/.serverless/**
+
+# zipped layers
+**/layers/**.zip