[1.0.0] Update the library to PHP 8.2.

[ChadSikorra]

Update the library to PHP 8.2. Add final readonly classes where applicable. Add enums where applicable. Update tests. Add phpstan.

[codecov]

Codecov Report

❌ Patch coverage is 73.81890% with 133 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.72%. Comparing base (8dfa6e1) to head (ea86a70).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
...c/FreeDSx/Sasl/Security/DigestMD5SecurityLayer.php	0.00%	89 Missing ⚠️
src/FreeDSx/Sasl/Security/DigestMD5Cipher.php	0.00%	19 Missing ⚠️
src/FreeDSx/Sasl/Challenge/DigestMD5Challenge.php	82.85%	6 Missing ⚠️
...c/FreeDSx/Sasl/Factory/DigestMD5MessageFactory.php	88.23%	6 Missing ⚠️
src/FreeDSx/Sasl/Factory/NonceTrait.php	0.00%	4 Missing ⚠️
src/FreeDSx/Sasl/Sasl.php	87.09%	4 Missing ⚠️
src/FreeDSx/Sasl/Message.php	60.00%	2 Missing ⚠️
src/FreeDSx/Sasl/Challenge/ScramChallenge.php	97.05%	1 Missing ⚠️
src/FreeDSx/Sasl/Encoder/DigestMD5Encoder.php	98.24%	1 Missing ⚠️
src/FreeDSx/Sasl/SaslContext.php	85.71%	1 Missing ⚠️

❌ Your project status has failed because the head coverage (76.72%) is below the target coverage (80.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@             Coverage Diff              @@
##               main       #7      +/-   ##
============================================
- Coverage     78.85%   76.72%   -2.14%     
- Complexity      428      432       +4     
============================================
  Files            25       27       +2     
  Lines          1296     1293       -3     
============================================
- Hits           1022      992      -30     
- Misses          274      301      +27     

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