CODEOWNERS proposal (#334)

* feat(github): Add new project-board group
  sort project team alphabetically
* feat(repo): Add example CODEOWNERS file
* feat(repo config): Require review from codeowners for owner_only template
  make linter happy

Signed-off-by: Jan Schoone <jan.schoone@uhurutec.com>

Author: jschoone

CODEOWNERS

@@ -0,0 +1 @@
+CODEOWNERS @org/project-board

orgs/SovereignCloudStack/data.yaml

@@ -652,6 +652,15 @@ teams:
     privacy: closed
     maintainer:
       - cpt-kernel-afk
+  - slug: "project-board"
+    description: "Members of  Board"
+    privacy: closed
+    maintainer:
+      - berendt
+      - fkr
+      - garloff
+      - jschoone
+      - matofeder
 
 # ==========================
 branch_protection_templates:
@@ -685,7 +694,7 @@ branch_protection_templates:
         users: []  # list of members or empty list
         teams: []  # list of teams or empty list
       dismiss_stale_reviews: false
-      require_code_owner_reviews: false
+      require_code_owner_reviews: true
       required_approving_review_count: 1
     restrictions:
       users: []  # list of members or empty list