Add a patch with getting nonce from transaction pool

geth-patches/0008-tx-pool-nonce.patch

@@ -0,0 +1,19 @@
+diff --git a/internal/ethapi/api.go b/internal/ethapi/api.go
+index 362379cc..6e12e500 100644
+--- a/internal/ethapi/api.go
++++ b/internal/ethapi/api.go
+@@ -956,6 +956,14 @@ func (s *PublicTransactionPoolAPI) GetRawTransactionByBlockHashAndIndex(ctx cont
+
+ // GetTransactionCount returns the number of transactions the given address has sent for the given block number
+ func (s *PublicTransactionPoolAPI) GetTransactionCount(ctx context.Context, address common.Address, blockNr rpc.BlockNumber) (*hexutil.Uint64, error) {
++	// go-ethereum issue https://github.com/ethereum/go-ethereum/issues/2880
++	if blockNr == rpc.PendingBlockNumber {
++		nonce, err := s.b.GetPoolNonce(ctx, address)
++		if err != nil {
++			return nil, err
++		}
++		return (*hexutil.Uint64)(&nonce), nil
++	}
+ 	state, _, err := s.b.StateAndHeaderByNumber(ctx, blockNr)
+ 	if state == nil || err != nil {
+ 		return nil, err

geth-patches/README.md

@@ -16,6 +16,7 @@ We try to minimize number and amount of changes in those patches as much as poss
  - `0005-whisper-delivery.patch` - adds support for logs/traces of Whisper traffic (questionable, nobody used this functionality so far)
  - `0006-latest-cht.patch` – updates CHT root hashes, should be updated regularly to keep sync fast, until proper Trusted Checkpoint sync is not implemented as part of LES/2 protocol.
  - `0007-README.patch` — update upstream README.md.
+ - `0008-tx-pool-nonce.patch` - On GetTransactionCount request with PendingBlockNumber get the nonce from transaction pool
 
 # Updating upstream version