Add new music discs and models for various shops; remove obsolete files

- Introduced new music discs: "City Under Siege", "Clothing Shop", "Food Mart", "Hat Shop", "Interior Shop", "Pawn Shop", and "Jump Up" with corresponding models and textures.
- Updated sounds.json to include new music disc entries.
- Created new JSON files for music disc models and their textures.
- Removed outdated models and textures for cobblestone, emerald, and stick.
- Deleted unnecessary blockbench textures and environment textures.
- Updated pack metadata to reflect new pack format and supported versions.

assets/minecraft/sounds.json

@@ -1,65 +1,58 @@
 {
-	"music_disc.jump_up": {
-		"category": "record",
-		"sounds": [
-			{
-				"name": "records/jump_up",
-				"stream": true
-			}
-		]
-	},
-	"music_disc.city_under_siege": {
-		"category": "record",
-		"sounds": [
-			{
-				"name": "records/city_under_siege",
-				"stream": true
-			}
-		]
-	},
-	"music_disc.food_mart": {
-		"category": "record",
-		"sounds": [
-			{
-				"name": "records/food_mart",
-				"stream": true
-			}
-		]
-	},
-	"music_disc.interior_shop": {
-		"category": "record",
-		"sounds": [
-			{
-				"name": "records/interior_shop",
-				"stream": true
-			}
-		]
-	},
-	"music_disc.clothing_shop": {
-		"category": "record",
-		"sounds": [
-			{
-				"name": "records/clothing_shop",
-				"stream": true
-			}
-		]
-	},
-	"music_disc.hat_shop": {
-		"category": "record",
-		"sounds": [
-			{
-				"name": "records/hat_shop",
-				"stream": true
-			}
-		]
-	},
-	"music_disc.pawn_shop": {
-		"category": "record",
-		"sounds": [
-			{
-				"name": "records/pawn_shop",
-				"stream": true
-			}
-		]
-	}
+  "music_disc.clothing_shop0": {
+    "sounds": [
+      {
+        "name": "records/music_disc_clothing_shop0",
+        "stream": true
+      }
+    ]
+  },
+  "music_disc.food_mart1": {
+    "sounds": [
+      {
+        "name": "records/music_disc_food_mart1",
+        "stream": true
+      }
+    ]
+  },
+  "music_disc.hat_shop2": {
+    "sounds": [
+      {
+        "name": "records/music_disc_hat_shop2",
+        "stream": true
+      }
+    ]
+  },
+  "music_disc.interior_shop3": {
+    "sounds": [
+      {
+        "name": "records/music_disc_interior_shop3",
+        "stream": true
+      }
+    ]
+  },
+  "music_disc.pawn_shop4": {
+    "sounds": [
+      {
+        "name": "records/music_disc_pawn_shop4",
+        "stream": true
+      }
+    ]
+  },
+  "music_disc.jump_up5": {
+    "sounds": [
+      {
+        "name": "records/music_disc_jump_up5",
+        "stream": true
+      }
+    ]
+  },
+  "music_disc.city_under_siege6": {
+    "sounds": [
+      {
+        "name": "records/music_disc_city_under_siege6",
+        "stream": true
+      }
+    ]
+  }
 }