chore: update extension icon

[SoniaSandler]

Updates the extension icon to not use the GitHub icon due to the usage guidelines

[jeffmaury]

I don't understand this change, why can't we use it, from the GitHub legal page:

[SoniaSandler]

@jeffmaury this is the part I'm worried about:

• Do not use any GitHub logo as the icon or logo for your business/organization, offering, project, domain name, social media account, or website.

Since this is the icon of the whole extension, so I'm not entirely sure if it falls within the allowed limits

Update: I asked in the UX channel

[vancura]

@jeffmaury: We checked GitHub's brand guidelines about the extension icon. The situation is:

• We can't use the GitHub logo as the extension icon itself. This falls under "Do not use any GitHub logo as the icon or logo for your project"
• We can use the GH logo within the extension's UI to show the GitHub integration. This is covered by "Use a permitted GitHub logo to inform others that your project integrates with GitHub".

The difference is that the extension icon represents the project's identity/branding (not allowed), while using the logo in UI elements, buttons, or connection status indicators is fine (and recommended).

@SoniaSandler's PR with the new icon is the right way to go. We'll design a custom extension icon, but should still display the GitHub logo somewhere in the extension interface to make the connection clear.

Pesky lawyers!

[SoniaSandler]

@vancura are we good to go with this icon or do you have something else in mind?

[vancura]

I will draw something ASAP.

[jeffmaury]

LGTM

[bmahabirbu]

LGTM! Interesting dilemma legally