GT-1991 Switch to an event object for callbacks on the Dashboard

[frett]

• introduce a ToolCardEvent class to capture all the events that can come out of tool cards
• introduce a DashboardHomeEvent to capture all the events HomeContent can emit
• introduce a DashboardLessonsEvent that represents events that can happen in the Lessons layout
• make the AllFavoritesList have a generic onEvent method
• finish updating DashboardLayout to use event objects for callbacks

[codecov]

Codecov Report

Merging #3011 (22d2ce0) into develop (e9dbab1) will decrease coverage by 0.29%.
Report is 13 commits behind head on develop.
The diff coverage is 1.67%.

@@             Coverage Diff             @@
##           develop    #3011      +/-   ##
===========================================
- Coverage    30.74%   30.46%   -0.29%     
===========================================
  Files          417      419       +2     
  Lines        10233    10318      +85     
  Branches      2240     2276      +36     
===========================================
- Hits          3146     3143       -3     
- Misses        6562     6652      +90     
+ Partials       525      523       -2     

Files Changed	Coverage Δ
...org/cru/godtools/ui/dashboard/DashboardActivity.kt	46.15% <0.00%> (-3.85%)	⬇️
...u/godtools/ui/dashboard/home/AllFavoritesLayout.kt	0.00% <0.00%> (ø)
...n/org/cru/godtools/ui/dashboard/home/HomeLayout.kt	14.37% <0.00%> (+1.81%)	⬆️
...org/cru/godtools/ui/dashboard/tools/ToolsLayout.kt	21.95% <0.00%> (-1.74%)	⬇️
...g/cru/godtools/ui/tooldetails/ToolDetailsLayout.kt	13.12% <0.00%> (-0.26%)	⬇️
...otlin/org/cru/godtools/ui/tools/ToolCardActions.kt	0.00% <0.00%> (ø)
...otlin/org/cru/godtools/ui/tools/ToolCardLayouts.kt	0.00% <0.00%> (ø)
...n/org/cru/godtools/ui/dashboard/DashboardLayout.kt	40.00% <6.66%> (-9.47%)	⬇️
...cru/godtools/ui/dashboard/lessons/LessonsLayout.kt	33.33% <10.00%> (-6.67%)	⬇️

... and 3 files with indirect coverage changes

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