Flutter WebView Expert -- 2

Flutter WebView Expert required for below task. Allot more work available after completing this task. Task 1.1 - Show the raw response content and HTTP headers Content-type of a Webview url response Steps: 1. In the background (without blocking Webview activity) listen for the response document (usually it will be html but there is no guarantee of the repsonse type) 2. display response document as a string in a dismissable toast message or another suitable dialogue you recommend. 3. display response document HTTP headers Content-type as a string in a dismissable toast message or another suitable dialogue you recommend. Example of a heade content type Content-Type: text/html; charset=UTF-8 Content-Type: multipart/form-data; boundary=something Task 1.3 - Create a parsable/readable html document object 1. In the background (without blocking Webview activity) listen for the response and read it (usually it will be html but there is no garauntee of the repsonse type) 3. If HTTP headers Content-type is HTML document then create an object or DOM tree or some other readable object type you recommend 4. pull an item from the tree and display as a string in a dismissable toast message or another suitable dialogue you recommend (item to pull to be agreed with you).