[vscode] Add namada_sdk unit test debug launch definition

Author: joel-u410

.vscode/launch.json

@@ -229,6 +229,25 @@
             "args": [],
             "cwd": "${workspaceFolder}"
         },
+        {
+            "type": "lldb",
+            "request": "launch",
+            "name": "Debug unit tests in library 'namada_sdk'",
+            "cargo": {
+                "args": [
+                    "test",
+                    "--no-run",
+                    "--lib",
+                    "--package=namada_sdk"
+                ],
+                "filter": {
+                    "name": "namada_sdk",
+                    "kind": "lib"
+                }
+            },
+            "args": [],
+            "cwd": "${workspaceFolder}"
+        },
         {
             "type": "lldb",
             "request": "launch",