Add optional default host and scheme to UrlGenerator

[vjik]

Q	A
Is bugfix?	❌
New feature?	✔️
Breaks BC?	❌

[what-the-diff]

PR Summary

• Added Feature for Specifying Default Host and Scheme
  The update includes a new feature in the UrlGenerator class that lets users outline a default host and scheme. In other words, it creates a standard template for URL creation when not specified in unique cases. This adjustment is applied in the constructor phase of the UrlGenerator and can be overridden later as needed.

• Updated generateAbsolute Method to Apply Default Settings
  There have been changes in the generateAbsolute method within the UrlGenerator class. Now, when generating a complete URL, if a host or a scheme value isn't provided individually, the method draws from the now available default host and scheme. This change provides increased flexibility and customization to URL generation.

• Inclusion of New Test Cases
  New test scenarios have been added to verify the performance and validity of the updated components within the UrlGenerator class. It ensures the newly integrated feature of default host and scheme fully performs as designed.

• Addressing Formatting Issue in UrlGeneratorTest Class
  This change corrects a formatting problem identified in the UrlGeneratorTest class. This correction ensures improved readability and comprehension of the tests.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.50%. Comparing base (77da24c) to head (8e00264).

Additional details and impacted files

@@             Coverage Diff              @@
##             master     #144      +/-   ##
============================================
+ Coverage     99.48%   99.50%   +0.01%     
+ Complexity       85       83       -2     
============================================
  Files             2        2              
  Lines           195      200       +5     
============================================
+ Hits            194      199       +5     
  Misses            1        1              

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