feat(notifications): add notification settings for new products

[vbro]

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 79.96%. Comparing base (be1e9c7) to head (e6a5b8c). Report is 5 commits behind head on master.

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #70622       +/-   ##
===========================================
+ Coverage   58.45%   79.96%   +21.51%     
===========================================
  Files        6493     6502        +9     
  Lines      290100   290499      +399     
  Branches    49994    50047       +53     
===========================================
+ Hits       169567   232291    +62724     
+ Misses     120161    57841    -62320     
+ Partials      372      367        -5     

Files	Coverage Δ
src/sentry/notifications/defaults.py	100.00% <ø> (ø)
src/sentry/notifications/types.py	100.00% <100.00%> (ø)

... and 1931 files with indirect coverage changes