meta: add TSC as owner of governance-related docs

.github/CODEOWNERS

@@ -5,7 +5,24 @@
 # 3. PRs touching any code with a codeowner must be signed off by at least one
 #    person on the code owner team.
 
+# tsc & commcomm
+
 /.github/CODEOWNERS @nodejs/tsc
+/GOVERNANCE.md @nodejs/tsc
+/onboarding.md @nodejs/tsc
+/CODE_OF_CONDUCT.md @nodejs/tsc @nodejs/community-committee
+/CONTRIBUTING.md @nodejs/tsc @nodejs/community-committee
+/LICENSE @nodejs/tsc @nodejs/community-committee
+/docs/guides/contributing/code-of-conduct.md @nodejs/tsc @nodejs/community-committee
+# TODO(mmarchini): the bot doens't have a notion of precedence, that might
+# change when move the codeowners code to an Action, at which point we can
+# uncomment the line below
+# /docs/guides/contributing/*.md @nodejs/tsc
+/docs/guides/contributing/issues.md @nodejs/tsc
+/docs/guides/contributing/pull-requests.md @nodejs/tsc
+/docs/guides/collaborator-guide.md @nodejs/tsc
+/docs/guides/offboarding.md @nodejs/tsc
+/docs/guides/onboarding-extras.md @nodejs/tsc
 
 # net