also had to fix a million clippy lints

fix(spaces): deal with hierarchy recursion
fix(spaces): properly handle max_depth
refactor(spaces): token scheme to prevent clients from modifying max_depth and suggested_only
perf(spaces): use tokens to skip to room to start populating results at
feat(spaces): request hierarchy from servers in via field of child event

Co-authored-by: Matthias Ahouansou <matthias@ahouansou.cz>
Signed-off-by: strawberry <strawberry@puppygock.gay>