Adding silabs & nordic as reviewer groups (project-chip#5274)

* Adding silabs & nodic

* Typt

Author: woody-apple

.github/CODEOWNERS

@@ -1,2 +1,2 @@
 # Current reviewers-XXX teams, who review everything for approval.
-* @reviewers-amazon @reviewers-apple @reviewers-comcast @reviewers-google @reviewers-samsung
+* @reviewers-amazon @reviewers-apple @reviewers-comcast @reviewers-google @reviewers-nordic @reviewers-samsung @reviewers-silabs

.pullapprove.yml

@@ -99,6 +99,14 @@ groups:
             teams: [reviewers-google]
         reviews:
             request: 2
+    shared-reviewers-nordic:
+        type: optional
+        conditions:
+            - files.include('*')
+        reviewers:
+            teams: [reviewers-nordic]
+        reviews:
+            request: 2
     shared-reviewers-samsung:
         type: optional
         conditions:
@@ -107,6 +115,14 @@ groups:
             teams: [reviewers-samsung]
         reviews:
             request: 2
+    shared-reviewers-silabs:
+        type: optional
+        conditions:
+            - files.include('*')
+        reviewers:
+            teams: [reviewers-silabs]
+        reviews:
+            request: 2
 
     ############################################################
     #  Base Required Reviewers

REVIEWERS.md

@@ -1,14 +1,11 @@
-The following individuals can be chosen as, and act as required reviewers on any
-PR
+People from the following groups can be chosen as, and act as required reviewers
+on any PR
 
-| Name                                            | Company             |
-| ----------------------------------------------- | ------------------- |
-| [anush-apple](https://github.com/anush-apple)   | Apple, Inc.         |
-| [msandstedt](https://github.com/msandstedt)     | Samsung SmartThings |
-| [chrisdecenzo](https://github.com/chrisdecenzo) | Amazon, Inc.        |
-| [hawk248](https://github.com/hawk248)           | Comcast, Inc.       |
-| [jelderton](https://github.com/jelderton)       | Comcast, Inc.       |
-| [andy31415](https://github.com/andy31415)       | Google, Inc.        |
-| [robszewczyk](https://github.com/robszewczyk)   | Google, Inc.        |
-| [saurabhst](https://github.com/saurabhst)       | Samsung SmartThings |
-| [woody-apple](https://github.com/woody-apple)   | Apple, Inc.         |
+| Group                                                                             | Company              |
+| --------------------------------------------------------------------------------- | -------------------- |
+| [reviewers-apple](https://github.com/orgs/project-chip/teams/reviewers-apple)     | Apple, Inc.          |
+| [reviewers-comcast](https://github.com/orgs/project-chip/teams/reviewers-comcast) | Comcast, Inc.        |
+| [reviewers-google](https://github.com/orgs/project-chip/teams/reviewers-google)   | Google, Inc.         |
+| [reviewers-nordic](https://github.com/orgs/project-chip/teams/reviewers-nordic)   | Nordic Semiconductor |
+| [reviewers-samsung](https://github.com/orgs/project-chip/teams/reviewers-samsung) | Samsung SmartThings  |
+| [reviewers-silabs](https://github.com/orgs/project-chip/teams/reviewers-silabs)   | Silicon Labs         |