add RouteLeg#notifications

[dzinad]

No description provided.

[codecov]

Codecov Report

Merging #1542 (1b31190) into main (d2848ac) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               main    #1542      +/-   ##
============================================
+ Coverage     77.36%   77.46%   +0.09%     
- Complexity      965      973       +8     
============================================
  Files           134      136       +2     
  Lines          4109     4126      +17     
  Branches        588      588              
============================================
+ Hits           3179     3196      +17     
  Misses          679      679              
  Partials        251      251              

Impacted Files	Coverage Δ
.../com/mapbox/api/directions/v5/models/RouteLeg.java	100.00% <ø> (ø)
.../mapbox/api/directions/v5/models/Notification.java	100.00% <100.00%> (ø)
.../api/directions/v5/models/NotificationDetails.java	100.00% <100.00%> (ø)
.../mapbox/api/directions/v5/models/RouteOptions.java	95.23% <100.00%> (+0.02%)	⬆️
...com/mapbox/api/directions/v5/MapboxDirections.java	90.07% <100.00%> (+0.15%)	⬆️

[LukasPaczos]

Flagging that backend API design is still in review so we shouldn't merge until that's finalized.