…Window components to pass API key to sendMessage function

fix(controllers): modify sendMessage function to include api_key in the request data if provided

feat(index.tsx): add api_key prop to ChatWidget component in custom element definition

… new flow ID, chat input field name, and API key

fix(index.ts): update headers object to include "api-key" header when provided in sendMessage function

… consistency and to follow best practices

…f "text" for better semantics

fix(index.tsx): add sessionId prop to ChatWindow component to keep track of the session ID
fix(index.tsx): update sendMessage function in ChatWindow component to include sessionId parameter
fix(index.tsx): add sessionId useRef to ChatWidget component to store the session ID
fix(index.ts): update sendMessage function to include sessionId parameter
feat(index.ts): add sessionId prop to ChatWindow component to pass the session ID to the API request

Fixed Session

Add Ref and event listener to keep focus on User input whilst chatting, avoiding need to manually refocus the input field.

Add Ref and event listener to keep focus on User input

…-headers

Inject additional headers