Custom Glints

[1.2.0]

Added:
- JEI integration: all Glint Trim, Tear, and smithing recipes now display in JEI.
- 35 new glint designs (55 total, up from 22). New: arcs, aurora, blobs, cascade, chevron,
  coral, cracks, debris, dunes, feather, frost, glitch, glow, halo, lightning, marble, matrix,
  mesh, mosaic, net, oil, petal, plasma, plate, prism, sand, sheen, shimmer, silk, slash, smoke,
  static, tide, tile, weave.
- Blank Glint Trim duplication: trims with no colors can now be duplicated with the same
  3x3 diamond recipe (Trim + 7 Diamonds + Glowstone Dust → 2 copies). Previously only
  trims with at least one color could be duplicated.
- Trim speed recipe: combine a Glint Trim with 1–8 Redstone Dust to set its animation speed
  (1 = 1x, 8 = 8x). Craft again with a different count to change it.
- Trim scale recipe: combine a Glint Trim with 1–8 Slimeballs to set the pattern zoom
  (1 ball = 0.5x zoom in, 8 balls = 4.0x zoom out). Craft again to change it. Scale carries
  through to the item when smithing.
- Data-pack design support: mods and data packs can register custom designs via
  data/<namespace>/customglint/designs/*.json. Registered designs appear in the editor
  picker, command suggestions, and the creative tab.
- The Glint Editor design picker is now a searchable scrollable overlay showing all 55
  built-in designs plus any data-pack designs, replacing the old fixed grid of 22 buttons.
- /glint apply now accepts two additional optional arguments: scale (0.25–4.0) and
  simultaneous (true/false). Tab completion now covers all 55 designs.

Removed:
- dots and skulls designs.