Add-Ons for Vanilla RTX

With this release, all Vanilla RTX Add-Ons are bundled inside one .mcaddon file which imports all 7 add-ons at once.

This format is also supposed by the Vanilla RTX App for bulk imports from a single file, you can discard/uninstall the add-ons you do not intend to use.
MCPEDL hides older uploads by default, by bundling them in a single file, people missing the downloadables is now less likely.

Release Notes:

> Clear Glass Add-On updates:
- Uncolored glass is no longer invisible in your inventory, added a faint texture.
- Added a new subpack featureing glass with deep colors, perfect for playing with light in RTX!
- MERS noise patterns of glass are now seamless

> Luminous Ores Add-On
- Updated textures and MERS based on later Vanilla RTX updates for consistency (e.g. all MERS and Normal Maps, as well as heightmaps, were previously overhauled)
- Added an option
- The pack is now less likely to break lit/active redstone ore with Vanilla RTX packs' enhanced option (this add-on now excludes blocks.json/terrain_texture.json, letting Vanilla RTX handle it).
- Redstone ore no longer becomes slightly darker when interacted with, instead appears very slightly brighter (requires Vanilla RTX's enhanced option to be enabled)
- Added POM properties to Vanilla RTX Normals
- Added a new subpack for Vanilla RTX Opus, featuring normal maps from that resource pack for consistency when used alongside it.

> Glowing Glazed Terracotta Add-On updates:
- Added a new subpack featureing the normal maps from Vanilla RTX Opus when used alongside that version of Vanilla RTX, for consistency
- Updated MERS metallic and glossiness properties to match glazed terracotta in later versions of Vanilla RTX

- Removed padding property from all applicable packs (unused in more recent Minecraft versions) & raised minimum engine version to 1.21.100 (should have been higher, but due to a Minecraft bug, this is the highest possible I can set at the moment)

- PBR formats of all packs are now consistent with the upcoming Vanilla RTX 1.26.20+ update. Added SSS and POM data to all packs (even if unused at the moment).