chore: add codeowners

.github/CODEOWNERS

@@ -0,0 +1,42 @@
+## MQTT
+/apps/emqx_connector/src/mqtt/ @qzhuyan
+/apps/emqx/*/*mqtt* @qzhuyan
+
+## apps
+/apps/emqx/                @lafirest @thalesmg @HJianBo @ieQu1
+/apps/emqx_authn/          @savonarola @JimMoen @HJianBo
+/apps/emqx_authz/          @savonarola @JimMoen @HJianBo
+/apps/emqx_auto_subscribe/ @thalesmg @HJianBo
+/apps/emqx_bridge/         @terry-xiaoyu @thalesmg
+/apps/emqx_conf/           @ieQu1 @thalesmg
+/apps/emqx_connector/      @terry-xiaoyu @JimMoen
+/apps/emqx_dashboard/      @lafirest @JimMoen
+/apps/emqx_exhook/         @lafirest @HJianBo @JimMoen
+/apps/emqx_gateway/        @HJianBo @lafirest
+/apps/emqx_machine/        @thalesmg @terry-xiaoyu @ieQu1
+/apps/emqx_management/     @HJianBo @lafirest @sstrigler
+/apps/emqx_modules/        @thalesmg @terry-xiaoyu @HJianBo
+/apps/emqx_plugin_libs/    @terry-xiaoyu @lafirest
+/apps/emqx_plugins/        @thalesmg @JimMoen @ieQu1
+/apps/emqx_prometheus/     @JimMoen @ieQu1
+/apps/emqx_psk/            @lafirest @thalesmg @terry-xiaoyu
+/apps/emqx_resource/       @terry-xiaoyu @thalesmg
+/apps/emqx_retainer/       @lafirest @ieQu1 @thalesmg
+/apps/emqx_rule_engine/    @terry-xiaoyu @HJianBo @kjellwinblad
+/apps/emqx_slow_subs/      @lafirest @HJianBo
+/apps/emqx_statsd/         @JimMoen @HJianBo
+
+## other
+/lib-ee/                   @thalesmg
+/bin/                      @zmstone @thalesmg @terry-xiaoyu @id
+/rel/                      @zmstone @thalesmg @id
+
+## CI
+/.github/ @id
+/.ci/     @id
+/scripts/ @id
+/build    @id
+/deploy/  @id
+
+## Default
+* @zmstone