implement data api search functions

[jreiberkyle]

implement the following data api search functions:

• list_searches
• delete_search
• get_search
• update_search
• run_search

[mkshah605]

list_searches = search-list
delete_search = search-delete
get_search = search-get
update_search = search-update
run_search = search-run

[jreiberkyle]

@mkshah605 the interface for these fcns was defined in #527