feat(pack): add Iris, shader packs, and new resource packs

- Add Iris Shaders 1.8.14-beta.1 (NeoForge) plus Iris Veil Compat and
  Aeronautics Iris Fix so Veil/Create Aeronautics visuals render
  correctly under shader packs.
- Add Fresh Animations: Extensions and Motschen's Better Leaves 8.0
  resource packs.
- Ship Complementary Reimagined and MakeUp - Ultra Fast shader packs
  to clients via shaderpacks/.

mods/iris.pw.toml

@@ -0,0 +1,13 @@
+name = "Iris Shaders"
+filename = "iris-neoforge-1.8.14-beta.1+mc1.21.1.jar"
+side = "client"
+
+[download]
+url = "https://cdn.modrinth.com/data/YL57xq9U/versions/KduFYu4t/iris-neoforge-1.8.14-beta.1%2Bmc1.21.1.jar"
+hash-format = "sha512"
+hash = "33fddb430e16222902eac75b8b3d57c381b0f3cc729f3b56c4628df12ca108f23a0b11e2feb167923d6d14d1fc7e8ee1a977ec421b19d1951bdca74c4092b9c5"
+
+[update]
+[update.modrinth]
+mod-id = "YL57xq9U"
+version = "KduFYu4t"