refactor/remove-cluster-id: (#220)

### Remove `cluster_id` Field from Protocol Buffers

 - **Removed `cluster_id` Field**: The `cluster_id` field has been removed from the `RequestHeader` and `ResponseHeader` messages across multiple langua
 bindings and source files. This includes updates to:
   - C++: `common.pb.cc`, `common.pb.h`
   - Go: `common.pb.go`
   - Java: `Common.java`
   - Proto: `common.proto`
   - Rust: `meta.rs`

 These changes streamline the protocol by eliminating the `cluster_id` field, simplifying the message structures and related logic.

proto/greptime/v1/meta/common.proto

@@ -20,8 +20,6 @@ option go_package = "github.com/GreptimeTeam/greptime-proto/go/greptime/v1/meta"
 
 message RequestHeader {
   uint64 protocol_version = 1;
-  // cluster_id is the ID of the cluster which be sent to.
-  uint64 cluster_id = 2;
   // member_id is the ID of the sender server.
   uint64 member_id = 3;
   Role role = 4;
@@ -38,8 +36,6 @@ enum Role {
 
 message ResponseHeader {
   uint64 protocol_version = 1;
-  // cluster_id is the ID of the cluster which sent the response.
-  uint64 cluster_id = 2;
   Error error = 3;
 }