17948: First working implementation (WIP)

There're some issues: RailsAPI's full text search index on collections
returns an error when creating collection with >~36k files. Also, PySDK
is returning a socket read timeout error, seemilngly disregarding the
'timeout' setting on the arvados.api() object.

Arvados-DCO-1.1-Signed-off-by: Lucas Di Pentima <lucas.dipentima@curii.com>