docs(amazonq): Documentation for setting up and running new UI E2E Tests w/ vscode-extension-tester#7750

abhraina-aws merged 10 commits intoaws:feature/ui-e2e-testsaws/aws-toolkit-vscode:feature/ui-e2e-testsfrom

surajrdy-aws:UI-Test-docsurajrdy-aws/aws-toolkit-vscode:UI-Test-docCopy head branch name to clipboard