Add a setting to suppress the minimum supported Nuke version Dialog

[RicardoMusch]

Add a setting to suppress the minimum supported Nuke version Dialog.
This is required for usage in a Studio pipeline where we are aware of the "danger" of running into issues but should be able to suppress these dialogs for our users.

Reasons:

• Minimum supported is not minimum required version so we can still use the engine but can expect bugs.
• It will become very annoying for users if Nuke blocks every time they load a new instance, something a comper might do a hundred times a day.
• This gives Pipeline TD's the ability to turn off the GUI Warning (it still logs the warning)

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 20.10%. Comparing base (e270632) to head (cf46d9e).

Files with missing lines	Patch %	Lines
engine.py	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #124      +/-   ##
==========================================
+ Coverage   19.04%   20.10%   +1.06%     
==========================================
  Files           6        6              
  Lines         546      547       +1     
==========================================
+ Hits          104      110       +6     
+ Misses        442      437       -5     

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