Synchronize code review session between the extension and GitHub site

[Deilan]

Synchronize code review session context between the extension and the GitHub site.

Is your feature request related to a problem? Please describe.

1. If a computer operating system or hardware failure, a work-in-progress review's summary will be lost (but code comments will be preserved). The reviewer could switch from the extension to a browser and continue review there, but, once again, summary will be lost.
2. If the extension doesn't support some of native GitHub Code Review features (e. g. multi-line comments), the reviewer could switch from the extension to GitHub site and continue to review there. But couldn't switch back to the extension and continue there, because comments posted directly at the site will not be available within the extension.

Describe the solution you'd like Implement two-way synchronization:

1. Code Review Summary from the extension comes to the site and vice versa.
2. Code Review comments from the extension comes to the site and vice versa.

So that the reviewer could switch between Visual Studio and browser as well as between different computers.

Currently only the following works:

1. Code Review comments from the extension comes to the site.

[toblogan]

Synchronize code review session context between the extension and the GitHub site.

Is your feature request related to a problem? Please describe.

1. If a computer operating system or hardware failure, a work-in-progress review's summary will be lost (but code comments will be preserved). The reviewer could switch from the extension to a browser and continue review there, but, once again, summary will be lost.
2. If the extension doesn't support some of native GitHub Code Review features (e. g. multi-line comments), the reviewer could switch from the extension to GitHub site and continue to review there. But couldn't switch back to the extension and continue there, because comments posted directly at the site will not be available within the extension.

Describe the solution you'd like Implement two-way synchronization:

1. Code Review Summary from the extension comes to the site and vice versa.
2. Code Review comments from the extension comes to the site and vice versa.

So that the reviewer could switch between Visual Studio and browser as well as between different computers.

Currently only the following works:

1. Code Review comments from the extension comes to the site.