Add extensive permissions to ui.table

[jnumainville]

The layout hint can_search was added to control whether or not a search bar can be used. It's been dropped from the current ui.table spec in favor of a more comprehensive treatment of table permissions.

A representative example, from Don

ui.table(...).permissions(
  search=false,
  filter=false,
  rollup=false,
  ...
  sidebar_menu 
  sort
  copy
  download
  re-order
  etc.
)

Some discussion here

[dsmmcken]

Thanks. Thinking about it, "permissions" might be an overloaded term to avoid as people may think ACL permissions. Naming it is hard.

[mofojed]

Yea permissions is a bit overloaded. capabilities? features?

[dsmmcken]

related enterprise request https://deephaven.atlassian.net/browse/DH-17783