Refactor/callbacks to promises

[kabir-afk]

Changes

As mentioned in docs , we had to replace extension methods which used callabacks with promises. This was the only code I could find which used a callback in extension API methods. Inside other methods , we have used promises to await their responses and then worked further ahead. Although I still encourage @hugolpz and @Ishan-Saini to go through the codebase and find if there is some method I missed.

With this we can close #98 .

[hugolpz]

Web API callback to promise migration table

Search in github code

• [x] .extension. = 0
• [x] .runtime.onSuspend = 0
• [x] .tabs.get = 0
• [x] .tabs.on = 0
• [x] .tabs.sendRequest = 0
• [x] .tabs.Tab = 0

[Ishan-Saini]

LGTM