Rollup_client/tezt: add module RPC in rollup node

Context

Add module RPC in smart_rollup_node, to use RPC instead of curl.get

Renaming:

• ticks: get_global_block_ticks
• state_hash: get_global_block_state_hash

Manually testing the MR

Checklist

• Document the interface of any function added or modified (see the coding guidelines)
• Document any change to the user interface, including configuration parameters (see node configuration)
• Provide automatic testing (see the testing guide).
• For new features and bug fixes, add an item in the appropriate changelog (docs/protocols/alpha.rst for the protocol and the environment, CHANGES.rst at the root of the repository for everything else).
• Select suitable reviewers using the Reviewers field below.
• Select as Assignee the next person who should take action on that MR