DAL+Etherlink: reveal DAL parameters

What

This MR introduces a call to the DAL host function which reveals the DAL parameters when the DAL feature flag is set. Nothing is done about these parameters yet but they will be needed later in the MR stack (in !13883 (merged)).

This MR is stacked on !14067 (merged).

Why

This is a step toward importing data from the DAL. At this point, we can check that the infrastructure to call DAL host functions (or to avoid calling them) is in place.

How

Manually testing the MR

To run all tests in which the DAL feature flag is activated but only one variant of each such test, run:

clear && make -f etherlink.mk build && make && dune exec etherlink/tezt/tests/main.exe -- alpha latest sequencer /threshold_encryption /flaky /slow dal

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