[chore][extension/observer/k8sobserver] Add ChrsMark to k8sobserver c…

…odeowners (open-telemetry#35682)

#### Description

I have been working with this component recently and I would be happy to
volunteer to help with its maintenance since I have relevant experience
maintaining similar components in
[Beats](https://github.com/elastic/beats) project.

/cc @dmitryax since we discussed this already.

✅ Being a member of Opentelemetry organization
PRs authored:
https://github.com/open-telemetry/opentelemetry-collector-contrib/pulls?q=is%3Apr+author%3AChrsMark+label%3Aextension%2Fobserver
PRs reviewed:
https://github.com/open-telemetry/opentelemetry-collector-contrib/pulls?q=is%3Apr+label%3Aextension%2Fobserver+reviewed-by%3AChrsMark+

Signed-off-by: ChrsMark <[email protected]>

.github/CODEOWNERS

@@ -109,7 +109,7 @@ extension/observer/dockerobserver/                                  @open-teleme
 extension/observer/ecsobserver/                                     @open-telemetry/collector-contrib-approvers @dmitryax @rmfitzpatrick
 extension/observer/ecstaskobserver/                                 @open-telemetry/collector-contrib-approvers @rmfitzpatrick
 extension/observer/hostobserver/                                    @open-telemetry/collector-contrib-approvers @MovieStoreGuy
-extension/observer/k8sobserver/                                     @open-telemetry/collector-contrib-approvers @rmfitzpatrick @dmitryax
+extension/observer/k8sobserver/                                     @open-telemetry/collector-contrib-approvers @rmfitzpatrick @dmitryax @ChrsMark
 extension/oidcauthextension/                                        @open-telemetry/collector-contrib-approvers @jpkrohling
 extension/opampcustommessages/                                      @open-telemetry/collector-contrib-approvers @BinaryFissionGames @evan-bradley
 extension/opampextension/                                           @open-telemetry/collector-contrib-approvers @portertech @evan-bradley @tigrannajaryan @BinaryFissionGames

extension/observer/k8sobserver/README.md

@@ -6,7 +6,7 @@
 | Stability     | [alpha]  |
 | Distributions | [contrib] |
 | Issues        | [![Open issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aopen%20label%3Aextension%2Fk8sobserver%20&label=open&color=orange&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aopen+is%3Aissue+label%3Aextension%2Fk8sobserver) [![Closed issues](https://img.shields.io/github/issues-search/open-telemetry/opentelemetry-collector-contrib?query=is%3Aissue%20is%3Aclosed%20label%3Aextension%2Fk8sobserver%20&label=closed&color=blue&logo=opentelemetry)](https://github.com/open-telemetry/opentelemetry-collector-contrib/issues?q=is%3Aclosed+is%3Aissue+label%3Aextension%2Fk8sobserver) |
-| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@rmfitzpatrick](https://www.github.com/rmfitzpatrick), [@dmitryax](https://www.github.com/dmitryax) |
+| [Code Owners](https://github.com/open-telemetry/opentelemetry-collector-contrib/blob/main/CONTRIBUTING.md#becoming-a-code-owner)    | [@rmfitzpatrick](https://www.github.com/rmfitzpatrick), [@dmitryax](https://www.github.com/dmitryax), [@ChrsMark](https://www.github.com/ChrsMark) |
 
 [alpha]: https://github.com/open-telemetry/opentelemetry-collector#alpha
 [contrib]: https://github.com/open-telemetry/opentelemetry-collector-releases/tree/main/distributions/otelcol-contrib

extension/observer/k8sobserver/metadata.yaml

@@ -6,7 +6,7 @@ status:
     alpha: [extension]
   distributions: [contrib]
   codeowners:
-    active: [rmfitzpatrick, dmitryax]
+    active: [rmfitzpatrick, dmitryax, ChrsMark]
 
 # TODO: Update the extension to make the tests pass
 tests: