This PR simply implements record filter group states and context, as we
did for record filter and record sort.
We use a separate context for record filter and record filter group,
we'll see later if it can be merged in practice, but better be cautious
for now.
This PR is simple, it creates states for record sort, mirroring record
filter states.
It also implements RecordSortsComponentInstanceContext everywhere
RecordFiltersComponentInstanceContext is used.
This could be later merged into a common RecordContext concept but we
first need to decide how to handle the existing ContextStore and
RecordIndexContext and ideally end up with a unique context (or a
context provider component that wraps in all those contexts at once).
Some bugs are already present on main when trying to delete a sort, they
will be fixed in the next PRs.
