Accountsdb plugin write ordering (#20948)

Use the write_version in the Accounts's meta data so that account write with lower write_version would not overwrite the higher ones.

accountsdb-plugin-interface/src/accountsdb_plugin_interface.rs

@@ -17,6 +17,7 @@ pub struct ReplicaAccountInfo<'a> {
     pub executable: bool,
     pub rent_epoch: u64,
     pub data: &'a [u8],
+    pub write_version: u64,
 }
 
 pub enum ReplicaAccountInfoVersions<'a> {