add tool setting service

fixes PLAT-608 PLAT-613 PLAT-615 PLAT-616 PLAT-620

test-plan
*spec should pass

Change-Id: Idf2a7d89973231a070a8d368bd60554e3501cdf6
Reviewed-on: https://gerrit.instructure.com/40227
Reviewed-by: Brad Humphrey <brad@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
Product-Review: Nathan Mills <nathanm@instructure.com>
QA-Review: Nathan Mills <nathanm@instructure.com>