✨ Add VS Code node:test debugging and runner config

launch.json: 'Debug current test file' F5 config running
node --test --strip-types on the active file.

settings.json: register .ts with the connor4312.nodejs-testing
extension via nodejs-testing.extensions, using --strip-types (the
repo pins node >=26 with native type stripping) instead of tsx, so
the extension discovers src/*.test.ts and shows Run/Debug lenses
above test() calls in the native Testing UI.

extensions.json: recommend connor4312.nodejs-testing; cspell.json:
allow 'connor' for the extension id.

.gitignore: un-ignore .vscode/launch.json so the config is shared.

cspell.json

@@ -42,7 +42,8 @@
         "bestikk",
         "silverwind",
         "idris",
-        "todotasks"
+        "todotasks",
+        "connor"
     ],
     "ignorePaths": ["dist", "node_modules", "coverage", "*.svg", ".gitignore"]
 }