Add code owner for config file (tikv#11206)

* add code owner for config file

Signed-off-by: Qiang Zhou <[email protected]>

.github/CODEOWNERS

@@ -0,0 +1,22 @@
+# Require review from domain experts when the PR modified significant config files.
+/components/batch-system/src/config.rs @tikv/tikv-configuration-reviewer
+/components/cdc/src/config.rs @tikv/tikv-configuration-reviewer
+/components/encryption/src/config.rs @tikv/tikv-configuration-reviewer
+/components/engine_rocks/src/config.rs @tikv/tikv-configuration-reviewer
+/components/engine_traits/src/config.rs @tikv/tikv-configuration-reviewer
+/components/pd_client/src/config.rs @tikv/tikv-configuration-reviewer
+/components/raftstore/src/coprocessor/config.rs @tikv/tikv-configuration-reviewer
+/components/raftstore/src/store/config.rs @tikv/tikv-configuration-reviewer
+/components/raftstore/src/store/worker/split_config.rs @tikv/tikv-configuration-reviewer
+/components/resource_metering/src/config.rs @tikv/tikv-configuration-reviewer
+/components/security/src/lib.rs @tikv/tikv-configuration-reviewer
+/components/sst_importer/src/config.rs @tikv/tikv-configuration-reviewer
+/components/tikv_util/src/config.rs @tikv/tikv-configuration-reviewer
+/etc/config-template.toml @tikv/tikv-configuration-reviewer
+/src/config.rs @tikv/tikv-configuration-reviewer
+/src/coprocessor_v2/config.rs @tikv/tikv-configuration-reviewer
+/src/server/config.rs @tikv/tikv-configuration-reviewer
+/src/server/gc_worker/config.rs @tikv/tikv-configuration-reviewer
+/src/server/lock_manager/config.rs @tikv/tikv-configuration-reviewer
+/src/server/status_server/mod.rs @tikv/tikv-configuration-reviewer
+/src/storage/config.rs @tikv/tikv-configuration-reviewer