Update code owners (#3262)

.github/CODEOWNERS

@@ -1,22 +1,11 @@
 # https://docs.github.com/en/repositories/managing-your-repositorys-settings-and-features/customizing-your-repository/about-code-owners#codeowners-syntax
 
+# Code owners are the final gate for PR approval to their named section of code.
+# If a single PR involves multiple code owners, every code owner should approve
+# a PR prior to merging.
+
 * @StephenButtolph
-/app/ @danlaine
-/codec/ @danlaine
-/database/corruptabledb/ @ceyonur
-/ids/ @danlaine @joshua-kim
-/indexer/ @danlaine
-/message/ @gyuho
-/network/ @danlaine @joshua-kim @StephenButtolph
-/network/throttling/ @danlaine @dboehm-avalabs @StephenButtolph
-/proto/ @gyuho
-/snow/ @danlaine @StephenButtolph
-/snow/consensus/ @gyuho @StephenButtolph
-/snow/engine/snowman/syncer/ @abi87
-/snow/uptime/ @ceyonur
-/utils/logging/ @ceyonur
-/vms/platformvm/ @abi87 @danlaine @dhrubabasu @StephenButtolph
-/vms/proposervm/ @abi87 @StephenButtolph
-/vms/registry/ @joshua-kim
-/tests/ @abi87 @gyuho @marun
-/x/ @danlaine @darioush @dboehm-avalabs
+/.github/ @marun
+/network/p2p/ @joshua-kim
+/scripts/ @marun
+/tests/ @marun