Add StreamController VSCode

[geeksville]

Checks

• I tested my changes or release
• I agree to the terms of service

Seems to work well enough for me.

[Core447]

Nice work! What I noticed:

• please remove the requirements.txt file. As anything in there causes it to be (re-)installed in the environment of the app itself and we already ship websocket-client with the app.
• it would be nice to have some info text in the action config area, telling the user to install the vscode extension (for inspiration check out the Discord plugin)
• for consistency reasons please rename your plugin to don't include StreamController in the name. Otherwise it's a bit weird in the action selector if only one plugin starts with "StreamController!

Feel free to ping me if you have any questions or are ready for merge.

[geeksville]

Sounds good! Will do. Thanks for making this btw.

[Core447]

Great! Just update the hash when you're ready.

[geeksville]

ok good to go now I think! Also I moved the hostname/portnum settings out of the Actions into a new plugin wide settings screen.

[Core447]

Nice work!