Describe every value kind in one table instead of spreading it over the code

A kind like colour or texture used to be spelled out in five parallel
lists, its port type, its empty value, its glyph, its label and its list
tag - 22 literal places for texture alone. core/properties/kinds.ts now
holds one row per kind and the rest is derived from it, so adding a kind
is one row. The five literal nodes collapse into literals.ts, the six
kind menus into one helper.

Number, Text, Boolean is now the one order everywhere; the variable and
port menus used to list Boolean before Text.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src/core/commands/variableCommands.ts

@@ -7,13 +7,13 @@ import {
 } from '../model/Properties';
 import { overrideSites } from '../model/instance';
 import type { Project } from '../model/Project';
+import type { VariableKind } from '../properties/kinds';
 import {
   emptyFieldValue,
   isValidFieldName,
   isValidVariableName,
   type PropertyDef,
   type StructFieldDef,
-  type VariableKind,
   variableDef,
 } from '../properties/PropertySchema';
 import { type Removed, removeFirst, restoreAt } from '../util/list';