test(main): add more test on rarely used blocks

[JLHwung]

Added more test samples on rarely used blocks.

It should reveal the following questions:

• The Hangul Syllable should not be categorized as punctuations.
• The Following blocks should be letters/Number letters.
  • Jamo Extended B
  • Hentaigana
  • CJK Ideograph Extension B..F
  • Hangzhou Numerals

[codecov-io]

Codecov Report

Merging #47 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #47   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines           9     11    +2     
=====================================
+ Hits            9     11    +2

Impacted Files	Coverage Δ
src/index.ts	100% <0%> (ø)	⬆️

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