Update OverrideConfiguration

[marcus-talbot42]

• Introduced fields for values that were retrieved from the parent configuration whenever they were called.
• Eagerly filling the new fields in the OverrideConfiguration's constructor.

Closes #201

[codecov]

Codecov Report

Attention: Patch coverage is 95.91837% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 87.61%. Comparing base (14073b6) to head (1f90204).

Files	Patch %	Lines
...n/java/io/beanmapper/config/CoreConfiguration.java	75.00%	0 Missing and 1 partial ⚠️
...va/io/beanmapper/config/OverrideConfiguration.java	97.77%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #202      +/-   ##
============================================
+ Coverage     87.57%   87.61%   +0.03%     
- Complexity      997      998       +1     
============================================
  Files           110      110              
  Lines          2206     2205       -1     
  Branches        247      246       -1     
============================================
  Hits           1932     1932              
- Misses          182      183       +1     
+ Partials         92       90       -2     

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