Add gitops-logo.svg and png icons for extension and gitops view container in activity bar

[RandomFractals]

see icon field in package.json from #4 and view container setup in #3

[RandomFractals]

@murillodigital we'll need better icons for this extension and gitOps activity bar view container. I used your corp. logo png for now:

[RandomFractals]

built-in vscode icons repo with templates to create them: https://github.com/microsoft/vscode-codicons

we need someone to create custom gitops-logo.svg and png icons for light and dark vscode UI themes using those templates to close this ticket.

see built-in icons gallery: https://microsoft.github.io/vscode-codicons/dist/codicon.html

[murillodigital]

@RandomFractals I'll talk to Marketing about this, AFAIK we have a similar request from other units in the org, and there is still some uncertainty as to which logo/icon to use going forward. I'll let you know once this is settled, for now, keep the one you're using.

[RandomFractals]

@murillodigital since what we are planning to offer as main functionality of this GitOps extension depends heavily on Flux, I suggest we use Flux icons and logo images, if you don't want to brand this extension with your WeaveWorks co. logo.

I find Flux icon from: https://fluxcd.io/ and used in other places in your docs very inline with your tools online documentation, and Kubernetes icons used by similar products.