.md (kanji) template: list/enumerate all unique fields

[sschmidTU]

_tools/kanji_template_full.md tries to list all unique fields (kanji data/properties) that are currently usable. _tools/new_kanji_template.md gives a template for the commonly needed fields for newly entered kanji.

TODO:

• [x] Write a script that lists all unique fields across the .md kanji files. To find typos, and to keep the full kanji template complete.

[sschmidTU]

Done. New script: npm run kanjifields found one error this way: "variant:" instead of "variants:" in 3050.md

example run:

searching all md files for unique field names.
probably mistake: variant:
found field layout:
found field v4:
found field v6:
found field kanji:
found field keyword:
found field elements:
found field elementsTree:
found field strokes:
found field image:
found field permalink:
found field prev:
found field next:
found field heisig:
found field commen:
found field elementsWK:
found field elementsPure:
found field elementsPureExtra:
found field primit:
found field elementsLowRes:
found field comments:
found field elementsPureVague:
found field comment:
found field structureVague:
found field keywordWK:
found field similar:
found field keywordAlts:
found field keywordRTK3:
found field keywordDisplayRTK:
found field alternateFor:
found field variantOf:
found field outdated:
found field jlpt:
found field variant:
found field keywordComment:
found field variants:
found field usuallykana:
found field ateji: