Add AWS IAM authentication field inputs

3 Fields to add to the connection form:

• AWS Access key id (username - text)
• AWS Secret Access Key (password - text/password)
• AWS Session Token (optional - key in authMechanismProperties like &authMechanismProperties=AWS_SESSION_TOKEN:<aws session token>' - text)

Figma styles: https://www.figma.com/file/Bs5CaG0UNgxoXO6AtuGsCd/Compass_Connection?node-id=1025%3A18309

Reference: https://docs.mongodb.com/manual/reference/connection-string/#mongodb-atlas-cluster