feat(amazonq): add handling for button clicks

[Hweinstock]

Problem

With aws/language-servers#1037, the chat client will forward the button click event to the host client (VSC in this case). We are then responsible for making a request to the LSP with this button click.

Solution

• route the button click to the LSP.
• log any failed button click actions.

Verification

See aws/language-servers#1037, for a demo of the e2e button hookup working.

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[github-actions]

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