src/config.ts: add Gitpod to the known cloud-based IDEs

This change adds Gitpod to the recognized cloud-based IDEs to avoid showing the welcome screen in every workspace.

Change-Id: Ib195924d561b039ff2f1150f9f5855c427028669
GitHub-Last-Rev: 070a46a4073f0eade226aedcfda2a1134757715c
GitHub-Pull-Request: golang/vscode-go#1616
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/333489
Reviewed-by: Hyang-Ah Hana Kim <hyangah@gmail.com>
Trust: Hyang-Ah Hana Kim <hyangah@gmail.com>
Trust: Suzy Mueller <suzmue@golang.org>
Run-TryBot: Hyang-Ah Hana Kim <hyangah@gmail.com>
TryBot-Result: kokoro <noreply+kokoro@google.com>
diff --git a/src/config.ts b/src/config.ts
index d8f54ac..56ba585 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -194,4 +194,5 @@
 }
 
 // True if the extension is running in known cloud-based IDEs.
-export const IsInCloudIDE = process.env.CLOUD_SHELL === 'true' || process.env.CODESPACES === 'true';
+export const IsInCloudIDE =
+	process.env.CLOUD_SHELL === 'true' || process.env.CODESPACES === 'true' || !!process.env.GITPOD_WORKSPACE_ID;