Add missing JIS X 0213 non-voiced kana (Hiragana/Katakana blocks) entries

[tats-u]

Description

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Character	Reading(s)	Note
ゕ	ヵ & か
ゖ	ヶ & け	The last hiragana that can be converted to katakana just by adding a constant. (/[ぁ-ゖゝゞ]/)
ヿ	こと	The last character in the Katakana block (/[゠-ヿ]/)

All of them can be converted by MS-IME.

The remaining proof is in #1349.

Issue IDs

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Fixes #1349

Steps to test new behaviors (if any)

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• OS: [e.g. Windows 11, macOS 13.1, etc]
• Steps:
  1. Type one of appended reading
  2. Convert
  3. Confirm the corresponding character appears as a candidate

Additional context

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Some kana characters registered in CJK Unified Ideographs (e.g. shite, tomo) are not covered.

[tats-u]

I wish we could reduce priority of these characters...
Also the mosquito emoji should be below its kanji.

[hiroyuki-komatsu]

Thank you for the PR. The PR looks good to me.

I wish we could reduce priority of these characters...
Also the mosquito emoji should be below its kanji.

I try to find a time to address this issue. Would you like to commit this PR then?

[tats-u]

Sure, but I just could not help expressing that I have felt sorry that users are more and more overwhelmed by minor candidates. (e.g. nasal voices and dices)