context: Add exception handling

[exbluesbreaker]

Related to #1727

[exbluesbreaker]

I do not know yet how to test all of the exceptions, I know there are already existing test case for not supported GL wrappers, but I am not sure how to test other exception being returned in f3d application. I saw some fabricated code in unit tests, only.

[mwestphal]

Some of these are already tested:

• TestRenderingBackendWGLFailure
• TestRenderingBackendGLXNoDisplay

Lets see what coverage says and we will see what we need to add

[codecov]

Codecov Report

Attention: Patch coverage is 88.88889% with 2 lines in your changes missing coverage. Please review.

Project coverage is 95.81%. Comparing base (9d5bc10) to head (4f5465b).
Report is 34 commits behind head on master.

Files with missing lines	Patch %	Lines
application/F3DStarter.cxx	88.23%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2064      +/-   ##
==========================================
+ Coverage   95.79%   95.81%   +0.01%     
==========================================
  Files         128      128              
  Lines       10485    10558      +73     
==========================================
+ Hits        10044    10116      +72     
- Misses        441      442       +1     

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[github-actions]

You are modifying libf3d public API! ⚠️Please update bindings accordingly⚠️!
You can find them in their respective directories: python, java, webassembly.

[exbluesbreaker]

You are modifying libf3d public API! ⚠️Please update bindings accordingly⚠️! You can find them in their respective directories: python, java, webassembly.

Oops

[exbluesbreaker]

Can somebody have a look about bindings. I changed Internals field in engine from raw to unique_ptr, it doesn't seem it is directly provided in bindings

[exbluesbreaker]

Ok, Windows also complains about exporting now, I guess I will just went back to raw pointer and add deallocation.

[mwestphal]

Approved but lets give some time for @Meakk to review

[mwestphal]

Thanks for the contribution @exbluesbreaker !