Add log for cosmos cursors (#3366)

### Description

IGP indexing seemed to not be working. Adding these logs revealed that
igp indexing was just super slow... After waiting for 15 mins to do a
full local sync based on the hyperlane context db, turns out we're
actually successfully indexing igp! Keeping the log for improved
troubleshooting in the future.

### Drive-by changes

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Are there any minor or drive-by changes also included?
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### Related issues

- Fixes #3372


### Backward compatibility

<!--
Are these changes backward compatible? Are there any infrastructure
implications, e.g. changes that would prohibit deploying older commits
using this infra tooling?

Yes/No
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### Testing

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What kind of testing have these changes undergone?

None/Manual/Unit Tests
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rust/chains/hyperlane-cosmos/src/interchain_gas.rs

@@ -212,7 +212,11 @@ impl Indexer<InterchainGasPayment> for CosmosInterchainGasPaymasterIndexer {
                 tokio::spawn(async move {
                     let logs = self_clone
                         .indexer
-                        .get_logs_in_block(block_number, Self::interchain_gas_payment_parser)
+                        .get_logs_in_block(
+                            block_number,
+                            Self::interchain_gas_payment_parser,
+                            "InterchainGasPaymentCursor",
+                        )
                         .await;
                     (logs, block_number)
                 })

rust/chains/hyperlane-cosmos/src/mailbox.rs

@@ -361,7 +361,11 @@ impl Indexer<HyperlaneMessage> for CosmosMailboxIndexer {
                 tokio::spawn(async move {
                     let logs = self_clone
                         .indexer
-                        .get_logs_in_block(block_number, Self::hyperlane_message_parser)
+                        .get_logs_in_block(
+                            block_number,
+                            Self::hyperlane_message_parser,
+                            "HyperlaneMessageCursor",
+                        )
                         .await;
                     (logs, block_number)
                 })

rust/chains/hyperlane-cosmos/src/merkle_tree_hook.rs

@@ -293,7 +293,11 @@ impl Indexer<MerkleTreeInsertion> for CosmosMerkleTreeHookIndexer {
                 tokio::spawn(async move {
                     let logs = self_clone
                         .indexer
-                        .get_logs_in_block(block_number, Self::merkle_tree_insertion_parser)
+                        .get_logs_in_block(
+                            block_number,
+                            Self::merkle_tree_insertion_parser,
+                            "MerkleTreeInsertionCursor",
+                        )
                         .await;
                     (logs, block_number)
                 })

rust/chains/hyperlane-cosmos/src/providers/rpc.rs

@@ -3,6 +3,7 @@ use cosmrs::rpc::client::Client;
 use hyperlane_core::rpc_clients::call_with_retry;
 use hyperlane_core::{ChainCommunicationError, ChainResult, ContractLocator, LogMeta, H256, U256};
 use sha256::digest;
+use std::fmt::Debug;
 use tendermint::abci::{Event, EventAttribute};
 use tendermint::hash::Algorithm;
 use tendermint::Hash;
@@ -25,9 +26,10 @@ pub trait WasmIndexer: Send + Sync {
         &self,
         block_number: u32,
         parser: for<'a> fn(&'a Vec<EventAttribute>) -> ChainResult<ParsedEvent<T>>,
+        cursor_label: &'static str,
     ) -> ChainResult<Vec<(T, LogMeta)>>
     where
-        T: Send + Sync + PartialEq + 'static;
+        T: Send + Sync + PartialEq + Debug + 'static;
 }
 
 #[derive(Debug, Eq, PartialEq)]
@@ -122,9 +124,10 @@ impl CosmosWasmIndexer {
         block: BlockResponse,
         block_results: BlockResultsResponse,
         parser: for<'a> fn(&'a Vec<EventAttribute>) -> ChainResult<ParsedEvent<T>>,
+        cursor_label: &'static str,
     ) -> Vec<(T, LogMeta)>
     where
-        T: PartialEq + 'static,
+        T: PartialEq + Debug + 'static,
     {
         let Some(tx_results) = block_results.txs_results else {
             return vec![];
@@ -231,17 +234,19 @@ impl WasmIndexer for CosmosWasmIndexer {
         &self,
         block_number: u32,
         parser: for<'a> fn(&'a Vec<EventAttribute>) -> ChainResult<ParsedEvent<T>>,
+        cursor_label: &'static str,
     ) -> ChainResult<Vec<(T, LogMeta)>>
     where
-        T: Send + Sync + PartialEq + 'static,
+        T: Send + Sync + PartialEq + Debug + 'static,
     {
         let client = self.provider.rpc().clone();
+        debug!(?block_number, ?cursor_label, "Getting logs in block");
 
         let (block, block_results) = tokio::join!(
             call_with_retry(|| { Box::pin(Self::get_block(client.clone(), block_number)) }),
             call_with_retry(|| { Box::pin(Self::get_block_results(client.clone(), block_number)) }),
         );
 
-        Ok(self.handle_txs(block?, block_results?, parser))
+        Ok(self.handle_txs(block?, block_results?, parser, cursor_label))
     }
 }

rust/config/mainnet3_config.json

@@ -494,7 +494,7 @@
       "contractAddressBytes": 32,
       "index": {
         "from": 4000000,
-        "chunk": 1
+        "chunk": 50
       },
       "blocks": {
         "reorgPeriod": 1
@@ -533,7 +533,7 @@
       "contractAddressBytes": 20,
       "index": {
         "from": 58419500,
-        "chunk": 1
+        "chunk": 50
       },
       "blocks": {
         "reorgPeriod": 10