Transition from manifest v2 to v3

[TarikGul]

closes: #1316
closes: #310

[WIP]

This PR has a lot left to fix, and test between firefox and chrome. A more thorough deccription will be provided as I work through all the errors that are present in the build.

[TarikGul]

So far the extension is working fine in chrome with the exception of the following errors:

Error: Invalid url chrome://extensions/?errors=fnpncejekijbiiemffncneiiilejbmbj, expected to start with http: or https: or ipfs: or ipns:

[TarikGul]

Instead of causing breaking changes to extension-base by enforcing async at the top level of State, I am going to just use the callback method for storage.local

Edit: Ahh but this might not work since there is no more persistent background.

[Tbaut]

edit: There was a stray change in the current state to avoid a TypeError: chrome.extension.getURL is not a function in packages/extension-base/src/background/handlers/State.ts

- const NOTIFICATION_URL = chrome.extension.getURL('notification.html');
+ const NOTIFICATION_URL = chrome.runtime.getURL('notification.html');

I had a quick look on Firefox, changing the manifest to make it happy with what I found here which I'm sure you know

  "background": {
    "scripts": ["background.js"]
  },

edit2: In Firefox the extension is then loaded correctly, I could add an account, but no script is injected on pages, so Dapps don't detect the extensions.

On chrome/brave, the next error I encountered in background.js was

ReferenceError: localStorage is not defined

[TarikGul]

@Tbaut Yea the I was able to fix the localStorage error but then reverted my changes because I would like to change the design of the implementation, but yea the localStorage issue will be fixed soon :)

[adamdossa]

Is it expected that this PR will be merged in the near future? We have a downstream dependency for our Polymesh Wallet which requires this in order to move to manifest V3. @Tbaut

[TarikGul]

Is it expected that this PR will be merged in the near future? We have a downstream dependency for our Polymesh Wallet which requires this in order to move to manifest V3. @Tbaut

Yes this is absolutely a priority! My goal is to get it done this week.