feat: Option to add child at First position to ViewComponent

[DeathPhoenix22]

Hi @AlmasB,

Add the possibility to add child to ViewComponent Last vs First.

No change to default behavior. Reference: #1361

[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 66.66667% with 2 lines in your changes missing coverage. Please review.

Project coverage is 59.57%. Comparing base (bb60463) to head (b1d9ecf). Report is 53 commits behind head on dev.

Files with missing lines	Patch %	Lines
...com/almasb/fxgl/entity/components/ViewComponent.kt	66.66%	1 Missing and 1 partial :warning:

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Additional details and impacted files

@@             Coverage Diff              @@
##                dev    #1362      +/-   ##
============================================
- Coverage     59.63%   59.57%   -0.06%     
- Complexity     2975     3026      +51     
============================================
  Files           310      320      +10     
  Lines         15310    15468     +158     
  Branches       1562     1583      +21     
============================================
+ Hits           9130     9215      +85     
- Misses         5657     5730      +73     
  Partials        523      523              

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