feat: add customizable constraints for each toast in show method

[jahnli]

The toast height is allowed to be adjusted

[jahnli]

Would it be better to cancel minheight ? By default, the height of the element is the standard, and the final height of the element is determined by setting the padding @payam-zahedi

[payam-zahedi]

Hey @jahnli

I added some changes on your code
I think it makes more sense to give the users access to the constraints instead of only minHeight.

[codecov]

Codecov Report

Attention: Patch coverage is 72.72727% with 3 lines in your changes missing coverage. Please review.

Project coverage is 74.34%. Comparing base (fa48d20) to head (16f0b23).
Report is 4 commits behind head on main.

Files with missing lines	Patch %	Lines
lib/src/built_in/layout/standard/style/style.dart	83.33%	1 Missing ⚠️
...standard/toast/minimal/minimal_standard_toast.dart	0.00%	1 Missing ⚠️
...t/standard/toast/simple/simple_standard_toast.dart	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #220      +/-   ##
==========================================
- Coverage   74.36%   74.34%   -0.02%     
==========================================
  Files          31       31              
  Lines         905      916      +11     
==========================================
+ Hits          673      681       +8     
- Misses        232      235       +3     

Flag	Coverage Δ
flutter	74.34% <72.72%> (-0.02%)	⬇️

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[jahnli]

Yes, that would be better. Please help me approve #218