PSR-12 and PHPCS

[niden]

To be merged after memory management fixes

• Changed standard to PSR-12
• Changed files to abide by the new standard
• Reformatted code for readability
• Reorganized code to have methods listed alphabetically (as well as properties, constants etc.)

[codecov]

Codecov Report

Merging #2420 (e76ef08) into development (1838e03) will decrease coverage by 1.03%.
The diff coverage is 7.02%.

❗ Current head e76ef08 differs from pull request most recent head 5b8de90. Consider uploading reports for the commit 5b8de90 to get more accurate results

Additional details and impacted files

@@               Coverage Diff                @@
##             development   #2420      +/-   ##
================================================
- Coverage           6.26%   5.23%   -1.03%     
+ Complexity          8164    7891     -273     
================================================
  Files                314     300      -14     
  Lines              21930   26802    +4872     
================================================
+ Hits                1373    1402      +29     
- Misses             20557   25400    +4843     

[sonarcloud]

SonarCloud Quality Gate failed.   

1 Bug
0 Vulnerabilities
0 Security Hotspots
208 Code Smells

No Coverage information
3.3% Duplication

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