Add missing textures and models from Chorus' Version

This also helps in preparing for the Nether Update (1.16). Textures were
optimised using OptiPNG by:

optipng -o7 -nx

followed by a second run with the defaults.

assets/minecraft/textures/item/clock.png.mcmeta

@@ -0,0 +1,3 @@
+{
+  "animation": {}
+}

assets/minecraft/textures/item/desktop.ini

@@ -0,0 +1,5 @@
+[LocalizedFileNames]
+spawn_egg.png=@spawn_egg,0
+spawn_egg_overlay.png=@spawn_egg_overlay,0
+dark_oak_door.png=@dark_oak_door,0
+jungle_door.png=@jungle_door,0

assets/minecraft/textures/item/ender_eye.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 3,
+		"interpolate": false,
+		"frames": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
+	}
+}

assets/minecraft/textures/item/ender_eye_e.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 3,
+		"interpolate": false,
+		"frames": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
+	}
+}

assets/minecraft/textures/item/ender_pearl.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 3,
+		"interpolate": false,
+		"frames": [0, 1, 2, 3]
+	}
+}

assets/minecraft/textures/item/ender_pearl_e.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 3,
+		"interpolate": false,
+		"frames": [0, 1, 2, 3]
+	}
+}

assets/minecraft/textures/item/phantom_membrane.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 3,
+		"interpolate": false,
+		"frames": [0, 1, 2]
+	}
+}

assets/minecraft/textures/item/phantom_membrane_e.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 3,
+		"interpolate": false,
+		"frames": [0, 1, 2]
+	}
+}

assets/minecraft/textures/item/potion_overlay.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 3,
+		"interpolate": false,
+		"frames": [0, 1, 2, 3, 4, 5]
+	}
+}

assets/minecraft/textures/item/totem_of_undying.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 100,
+		"interpolate": true,
+		"frames": [0, 1, 2, 3, 4, 5]
+	}
+}

assets/minecraft/textures/item/totem_of_undying_e.png.mcmeta

@@ -0,0 +1,7 @@
+{
+	"animation": {
+        "frametime": 100,
+		"interpolate": true,
+		"frames": [0, 1, 2, 3, 4, 5]
+	}
+}