Added validation for ULID (Universally Unique Lexicographically Sortable Identifier).

Read more details on ULID in github:ulid/spec
ULID Generator and validations on https://ulid.page

Checklist

• PR contains only changes related; no stray files, etc.
• README updated (where applicable)
• Tests written (where applicable)
• References provided in PR (where applicable)

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.95%. Comparing base (f81d857) to head (9891a3b).
Report is 1 commits behind head on master.

❗ Current head 9891a3b differs from pull request most recent head 0995b5c

Please upload reports for the commit 0995b5c to get more accurate results.

@@             Coverage Diff             @@
##            master    #2294      +/-   ##
===========================================
- Coverage   100.00%   99.95%   -0.05%     
===========================================
  Files          110      108       -2     
  Lines         2510     2455      -55     
  Branches       633      620      -13     
===========================================
- Hits          2510     2454      -56     
- Partials         0        1       +1     

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