MIR: big_map operations

Context

NB: commit "MIR: GET_AND_UPDATE instruction, map overload" is cherry-picked from !11275 (merged) to avoid effort duplication.

Based on: !11301 (merged) !11260 (merged)

Part of: #6626 (closed)

Manually testing the MR

cargo test

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