Remove action type plugins

[torotil]

This is a bit of refactoring spawned by #228 and earlier changes (eg in 6b47d75). After moving defaultTemplateNid() into ActionBase the only thing the ActionType (former TypeBase) class is good for is to query the $info array. isEmailProtest() will be removed soon, then isDonation() will be the only method left.

[codecov]

Codecov Report

Merging #233 into 7.x-2.x will decrease coverage by 0.04%.
The diff coverage is 82.05%.

@@              Coverage Diff              @@
##             7.x-2.x     #233      +/-   ##
=============================================
- Coverage      44.08%   44.04%   -0.05%     
+ Complexity      1806     1801       -5     
=============================================
  Files            282      281       -1     
  Lines          10104    10093      -11     
  Branches         154      154              
=============================================
- Hits            4454     4445       -9     
+ Misses          5647     5645       -2     
  Partials           3        3              

Impacted Files	Coverage Δ	Complexity Δ
...on_email_to_target/src/Wizard/ConfirmationStep.php	0.00% <ø> (ø)	2.00 <0.00> (ø)
campaignion_action/src/ActionBase.php	55.55% <66.66%> (-2.63%)	29.00 <7.00> (+5.00)	⬇️
campaignion_action/src/ActionType.php	75.00% <75.00%> (ø)	3.00 <3.00> (?)
campaignion_action/campaignion_action.module	35.97% <100.00%> (+0.93%)	0.00 <0.00> (ø)
campaignion_action/src/Loader.php	54.54% <100.00%> (-4.48%)	25.00 <0.00> (-2.00)
campaignion_email_to_target/src/Action.php	76.92% <100.00%> (-1.02%)	27.00 <1.00> (-1.00)

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