Add support for New Code Search and Code View

[AnsonH]

Description

This PR adds support for the New Code Search and Code View beta feature.

The new code view uses the .react-code-text CSS selector to apply font-family styles instead of the old .blob-code-inner selector.

Here's the result:

[AmraniCh]

Thanks.

[AmraniCh]

Version [v2.2] is just released, It will be available soon in the chrome store once it is reviewed and accepted by the store team.