Cardano Updates

Refactor the handling of testnet arguments by introducing a dictionary
for better maintainability and readability. Replace the previous
conditional logic with a dictionary lookup and handle unknown
environments with a custom exception.

- Add done_time_str to store the current UTC time at the end of sync
- Refactor loops to use indices for better readability
- Simplify calculation of end_sync_time and sync_duration_secs
- Update comments for clarity and consistency

- Consolidated the sync progress and slot number checks into a single loop.
- Removed redundant code and combined similar logic for era and epoch updates.
- Improved logging by using consistent time formatting.
- Ensured termination conditions are clear and concise.

- Refactored `get_no_of_slots_in_era` to use genesis JSON for epoch
  length retrieval.
- Added `find_genesis_json` function to locate genesis JSON files.
- Updated `wait_for_node_to_sync` to use the refactored
  `get_no_of_slots_in_era` function.

This avoids having to convert on the fly for each entry.

Add files via upload

add cgt token

Add a New Client Token by SnekX

Add a New Client Token by SnekX

Add a New Client Token by SnekX

Add a New Client Token by SnekX

Add a New Client Token by SnekX

Add a New Client Token by SnekX

Add a New Client Token by SnekX