maintainers: arduino-api: Add DhruvaG2000 as maintainer

Mark this subsystem as maintained and add DhruvaG2000
as maintainer.

Signed-off-by: TOKITA Hiroshi <[email protected]>

Author: soburi

MAINTAINERS.yml

@@ -6003,6 +6003,15 @@ West:
     - microbuilder
   files: []
 
+"West project: gsoc-2022-arduino-core":
+  status: maintained
+  maintainers:
+    - dhruvag2000
+  files:
+    - snippets/arduino-core/
+  labels:
+    - manifest-arduino-api
+
 Wurth Elektronik Platforms:
   status: maintained
   maintainers: