Closes #12522: Reuse exceptions code

[NotWoods]

These classes are pretty much copies, so this code moves most logic into shared base classes. We're planning to introduce a shared list component later so this work helps with that too.

• Everything is under org.mozilla.fenix.exceptions now
• ViewHolders are identical for both fragments
• Logic is moved from fragments to interactors, making it testable

[codecov-commenter]

Codecov Report

Merging #13047 into master will increase coverage by 0.01%.
The diff coverage is 72.22%.

@@             Coverage Diff              @@
##             master   #13047      +/-   ##
============================================
+ Coverage     27.68%   27.69%   +0.01%     
+ Complexity     1010     1002       -8     
============================================
  Files           416      415       -1     
  Lines         16628    16590      -38     
  Branches       2131     2130       -1     
============================================
- Hits           4603     4595       -8     
+ Misses        11696    11664      -32     
- Partials        329      331       +2     

Impacted Files	Coverage Δ	Complexity Δ
...pp/src/main/java/org/mozilla/fenix/HomeActivity.kt	6.61% <ø> (ø)	13.00 <0.00> (ø)
.../fenix/exceptions/login/LoginExceptionsFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (?)
...protection/TrackingProtectionExceptionsFragment.kt	0.00% <0.00%> (ø)	0.00 <0.00> (?)
.../org/mozilla/fenix/exceptions/ExceptionsAdapter.kt	76.92% <76.92%> (ø)	8.00 <8.00> (?)
...a/fenix/exceptions/login/LoginExceptionsAdapter.kt	80.00% <80.00%> (ø)	4.00 <4.00> (?)
...gprotection/TrackingProtectionExceptionsAdapter.kt	81.25% <81.25%> (ø)	4.00 <4.00> (?)
...ava/org/mozilla/fenix/exceptions/ExceptionsView.kt	90.90% <90.90%> (ø)	4.00 <4.00> (?)
.../fenix/exceptions/login/ExceptionsFragmentStore.kt	100.00% <100.00%> (ø)	1.00 <0.00> (?)
...enix/exceptions/login/LoginExceptionsInteractor.kt	100.00% <100.00%> (ø)	0.00 <0.00> (?)
...illa/fenix/exceptions/login/LoginExceptionsView.kt	100.00% <100.00%> (ø)	2.00 <2.00> (?)
... and 18 more

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[ekager]

Tested this on device and looks great! Just a few nits