MAINTAINERS: add the Octavo Systems Platforms area

This commit adds the `Octavo Systems Platforms` area of maintenance.

Signed-off-by: Jakub Wasilewski <jwasilewski@internships.antmicro.com>
Signed-off-by: Filip Kokosinski <fkokosinski@antmicro.com>

MAINTAINERS.yml

@@ -3919,6 +3919,19 @@ nRF Platforms:
   labels:
     - "platform: nRF"
 
+Octavo Systems Platforms:
+  status: maintained
+  maintainers:
+    - fkokosinski
+    - tgorochowik
+  collaborators:
+    - kgugala
+  files:
+    - boards/oct/
+    - soc/oct/
+  labels:
+    - "platform: Octavo Systems"
+
 OpenTitan Platforms:
   status: maintained
   maintainers: