Closes the WTKN open-format loop with --export-wtkn-json /
--import-wtkn-json, mirroring the JSON pairs added for
every other novel binary format. All 22 binary formats
added since WOL now have full JSON round-trip authoring.
Each token round-trips all 8 scalar fields (tokenId, name,
description, iconPath, category, maxBalance, weeklyCap,
flags). Two enum-typed fields (category and flags) emit
dual int + name forms.
The flag bitset emits string-array form so a hand-author
can write ["hidden", "resets"] instead of having to
remember that HiddenUntilEarned|ResetsOnLogout = 0xC.
Verified byte-identical round-trip on the PvP preset
(8 tokens: Honor + Arena + 6 BG marks of honor with
maxBalance + weeklyCap + flags all preserved).
Adds 2 flags (596 documented total now).