Allow the extra path to be ignored when redirecting

[acelaya]

Closes #2265

Add a new REDIRECT_EXTRA_PATH_MODE option to have more granularity when it comes to matching short URLs with extra path.

Up until now it was possible to set REDIRECT_APPEND_EXTRA_PATH with values true or false. When true, short URLs would only match if the visited path was exactly the short code or custom slug of a URL. When false, they would match as long as they started with the short code or custom slug, and the rest of the path would be appended to the long URL before redirecting.

The new option replaces this one by providing extra path modes:

• default: Same as setting REDIRECT_APPEND_EXTRA_PATH to false.
• append: Same as setting REDIRECT_APPEND_EXTRA_PATH to true.
• ignore: Will match short URLs using the same logic as append, but the extra path will be discarded instead.

With this PR REDIRECT_APPEND_EXTRA_PATH becomes deprecated and marked for removal in Shlink 5.0.0

[codecov]

Codecov Report

Attention: Patch coverage is 50.00000% with 7 lines in your changes missing coverage. Please review.

Project coverage is 93.64%. Comparing base (ede58ef) to head (d83081f).
Report is 4 commits behind head on develop.

Files with missing lines	Patch %	Lines
...le/Core/src/Config/Options/UrlShortenerOptions.php	0.00%	7 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #2298      +/-   ##
=============================================
- Coverage      93.70%   93.64%   -0.07%     
- Complexity      1657     1661       +4     
=============================================
  Files            275      275              
  Lines           5782     5790       +8     
=============================================
+ Hits            5418     5422       +4     
- Misses           364      368       +4     

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