What

Change the location of the DAL skip list cells sqlite storage.

It was previously created under the $data_dir/ path, and can now be found under $data_dir/skip_list_store/.

Why

In case we need to create another sqlite store, it is preferable to separate them in different folders.

Move sqlite storage init function in its own module. Assuming each sqlite store will be in a separate module inside the dal_store_sqlite3.ml file.
Introduce the init_sqlite_skip_list_cells_store function in store.ml to handle the correct path to be used when initializing the store.
Update the migration function to no remove the all store as it was previously implemented.
Copy the sql store if it was already used (i.e the user already used the --sqlite3-backend CLI flag.

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

Edited Nov 29, 2024 by Paul Laforgue