[Ohrrpgce] SVN: teeemcee/13228 sliceedit: Add byte editing, and allow default values for menu items oth

[subversion at HamsterRepublic.com]

teeemcee
2023-04-22 20:34:27 -0700 (Sat, 22 Apr 2023)
222
sliceedit: Add byte editing, and allow default values for menu items other than enums

(I split out sliceed_rule_set_default from sliceed_rule_enum)

Also converted the helpkeys to a zstring ptr to reduce executable sizes.
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U   wip/sliceedit.bas