add vscode workspace that makes debugging zoekt easier

Author: brendan-kellam

.vscode/sourcebot.code-workspace

@@ -0,0 +1,16 @@
+{
+	"folders": [
+		{
+			"path": ".."
+		},
+		{
+			"path": "../vendor/zoekt"
+		}
+	],
+	"settings": {
+		"files.associations": {
+			"*.json": "jsonc",
+			"index.json": "json"
+		}
+	}
+}