[Major] Drop support for versions < 8.1

[simivar]

• Add tests for PHP 8.3
• Drop support for PHP < 8.1 - PHP 8.0 is not supported for longer than 7 months
• All Exceptions now extend PhpSnowflakeException - to help with the try { } catch ()
• Conversion from base 10 to base 2 now uses BCMath - if ID was bigger than PHP_INT_MAX (e.g. on 32bit system) it would break
• All files have strict types declared
• All methods have param and return types declared
• PHPUnit upgraded to the newest version (^10)
• Added information about Sonyflake algorithm

Solves #52

[codecov-commenter]

Codecov Report

Patch coverage: 99.18% and project coverage change: -0.44 ⚠️

Comparison is base (6a35e7d) 100.00% compared to head (1cf283f) 99.56%.

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Additional details and impacted files

@@              Coverage Diff              @@
##              master      #54      +/-   ##
=============================================
- Coverage     100.00%   99.56%   -0.44%     
- Complexity        53       89      +36     
=============================================
  Files              6        7       +1     
  Lines            146      230      +84     
=============================================
+ Hits             146      229      +83     
- Misses             0        1       +1     

Impacted Files	Coverage Δ
src/FileLockResolver.php	98.73% <98.73%> (ø)
src/LaravelSequenceResolver.php	100.00% <100.00%> (ø)
src/RandomSequenceResolver.php	100.00% <100.00%> (ø)
src/RedisSequenceResolver.php	100.00% <100.00%> (ø)
src/Snowflake.php	100.00% <100.00%> (ø)
src/Sonyflake.php	100.00% <100.00%> (ø)
src/SwooleSequenceResolver.php	100.00% <100.00%> (ø)

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[godruoyi]

just left a bit comments, and this is great work, thanks a lot,

[simivar]

@godruoyi I've addressed all the comments

[godruoyi]

Thank you @simivar, LGTM