FEATURE: move the file CustomPhpStanFunctionMap to the config directory and improved the cache CI

[Kharhamel]

No description provided.

[codecov-commenter]

Codecov Report

Merging #319 (7b24dae) into master (18c0068) will decrease coverage by 0.06%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##             master     #319      +/-   ##
============================================
- Coverage     48.55%   48.48%   -0.07%     
  Complexity      308      308              
============================================
  Files            16       15       -1     
  Lines           795      794       -1     
============================================
- Hits            386      385       -1     
  Misses          409      409              

Impacted Files	Coverage Δ
.../src/PhpStanFunctions/PhpStanFunctionMapReader.php	92.30% <100.00%> (ø)
generator/config/CustomPhpStanFunctionMap.php

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