Add initial CODEOWNERS file (#939)

See also: https://github.com/openbao/dev-wg/blob/main/notes/2024-11-14.md

Signed-off-by: Alexander Scheel <ascheel@gitlab.com>

Author: cipherboy

CODEOWNERS

@@ -0,0 +1,11 @@
+# OpenBao CODEOWNERS file
+
+# Everything
+* @openbao/openbao-committers
+
+# JWT Auth Plugin
+builtin/credential/jwt @openbao/openbao-committers @openbao/openbao-auth-jwt-committers
+command/agentproxyshared/auth/jwt @openbao/openbao-committers @openbao/openbao-auth-jwt-committers
+website/content/docs/auth/jwt/ @openbao/openbao-committers @openbao/openbao-auth-jwt-committers
+website/content/api-docs/auth/jwt.mdx @openbao/openbao-committers @openbao/openbao-auth-jwt-committers
+website/content/docs/agent-and-proxy/autoauth/methods/jwt.mdx @openbao/openbao-committers @openbao/openbao-auth-jwt-committers