Add token rpc endpoints to rpc-client (bp #11315) (#11320)

* Add token rpc endpoints to rpc-client (#11315)

(cherry picked from commit 9bcfc51df1)

# Conflicts:
#	client/src/rpc_client.rs

* Fix conflicts

Co-authored-by: Tyera Eulberg <teulberg@gmail.com>
Co-authored-by: Tyera Eulberg <tyera@solana.com>

core/src/rpc.rs

@@ -18,7 +18,7 @@ use solana_client::{
     rpc_config::*,
     rpc_filter::{Memcmp, MemcmpEncodedBytes, RpcFilterType},
     rpc_request::{
-        DELINQUENT_VALIDATOR_SLOT_DISTANCE, MAX_GET_CONFIRMED_BLOCKS_RANGE,
+        TokenAccountsFilter, DELINQUENT_VALIDATOR_SLOT_DISTANCE, MAX_GET_CONFIRMED_BLOCKS_RANGE,
         MAX_GET_CONFIRMED_SIGNATURES_FOR_ADDRESS_SLOT_RANGE,
         MAX_GET_SIGNATURE_STATUSES_QUERY_ITEMS, NUM_LARGEST_ACCOUNTS,
     },
@@ -942,11 +942,6 @@ fn verify_signature(input: &str) -> Result<Signature> {
         .map_err(|e| Error::invalid_params(format!("Invalid param: {:?}", e)))
 }
 
-pub enum TokenAccountsFilter {
-    Mint(Pubkey),
-    ProgramId(Pubkey),
-}
-
 fn verify_token_account_filter(
     token_account_filter: RpcTokenAccountsFilter,
 ) -> Result<TokenAccountsFilter> {