Expose precheck and check_signature for manager operation from the protocol

Context

This MR aims to expose two functions check_manager_signature and precheck_manager that will later be used for the precheck of operations.

This MR is the first step to the precheck of operations. It will be followed by !3813 (merged) that needs this two functions to implement precheck for manager operations.

Note : If the protocol environment is not plan to be updated for J we need to update this MR to expose more generic function that does not only handle manager operations.

Manually testing the MR

Check that the CI is green since this MR only expose functions no tests are added.

Checklist

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