Protocol 21 support

[L-Zuluaga]

ℹ️ This issue is an Epic 🎯

Context

We are working on supporting the protocol 21, and to accomplish that we need to add additional endpoints required for this

Objective

The objective is to implement all the required soroban endpoints endpoints

Checklist

• Create the getVersionInfo endpoint #159
• Create the getTransactions endpoint #160
• Create the getLedgers endpoint #161
• Create the getFeeStats endpoint #162
• Update the simulateTransaction response #163
• Add ledger range to getHealth endpoint #170