chore: add reth persistence and conditional rollkit init (#2330)

This PR adds two modifications on docker compose stacks :

1. **Reth block persistence**: Added flags to persist latest blocks on
disk for better data durability
2. **Conditional rollkit initialization**: Added configuration condition
to control rollkit initialization flow, to prevent issues on container
restarts


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Added new configuration options to Ethereum client services for
enhanced customization.
- **Chores**
- Improved initialization logic to prevent redundant configuration setup
when starting services.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: auricom

apps/evm/single/docker-compose.yml

@@ -26,6 +26,8 @@ services:
           --authrpc.jwtsecret /root/jwt/jwt.hex \
           --http --http.addr 0.0.0.0 --http.port 8545 \
           --http.api "eth,net,web3,txpool" \
+          --engine.persistence-threshold 0 \
+          --engine.memory-block-buffer-target 0 \
           --disable-discovery
     networks:
       - rollkit-network

apps/evm/single/entrypoint.sh

@@ -5,7 +5,10 @@ cd /usr/bin
 
 sleep 5
 
-./evm-single init --rollkit.node.aggregator=true --rollkit.signer.passphrase $EVM_SIGNER_PASSPHRASE
+# Create default rollkit config if missing
+if [ ! -f "$HOME/.evm-single/config/signer.json" ]; then
+  ./evm-single init --rollkit.node.aggregator=true --rollkit.signer.passphrase $EVM_SIGNER_PASSPHRASE
+fi
 
 # Conditionally add --rollkit.da.address if ROLLKIT_DA_ADDRESS is set
 da_flag=""
@@ -35,4 +38,4 @@ exec ./evm-single start \
   --rollkit.signer.passphrase $EVM_SIGNER_PASSPHRASE \
   $da_flag \
   $da_auth_token_flag \
-  $da_namespace_flag 
+  $da_namespace_flag

execution/evm/docker/docker-compose.yml

@@ -46,6 +46,8 @@ services:
           --authrpc.jwtsecret /root/jwt/jwt.hex \
           --http --http.addr 0.0.0.0 --http.port 8545 \
           --http.api "eth,net,web3,txpool" \
+          --engine.persistence-threshold 0 \
+          --engine.memory-block-buffer-target 0 \
           --disable-discovery \
           --txpool.pending-max-count 200000 \
           --txpool.pending-max-size 200 \