Enable/disable ports to automatic port fowarding

[didvc]

While the vscode's automatic port fowarding is oftentimes great, I found that it sometimes causes issues or crashes, bugs. For example I see a lot the port fowarding on vscode conflicts with previous vscode's same port fowarding, or with already-opening port fowarding ports.

I see on #108346 remote.autoForwardPorts would work to completely disable the feature, but I would suggest there should also be a feature that enables users to allow/block which ports to auto port forward and ports not to auto port forward.

[alexr00]

This is possible already with the remote.portsAttributes setting. For example:

	"remote.portsAttributes": {
		"3000": {
			"onAutoForward": "ignore"
		}
	},