add redstone tweaks resource pack and fix blockstate variant order

public/assets/minecraft/models/block/observer/off.json

@@ -0,0 +1,23 @@
+{
+    "parent": "block/block",
+    "textures": {
+        "bottom": "block/observer/back",
+        "side": "block/observer/side",
+        "top": "block/observer/top",
+        "front": "block/observer/front",
+        "particle": "block/observer/front"
+    },
+    "elements": [
+        {   "from": [ 0, 0, 0 ],
+            "to": [ 16, 16, 16 ],
+            "faces": {
+                "down":  { "uv": [ 0, 0, 16, 16 ], "texture": "#top", "cullface": "down" },
+                "up":    { "uv": [ 0, 16, 16, 0 ], "texture": "#top", "cullface": "up" },
+                "north": { "uv": [ 0, 0, 16, 16 ], "texture": "#front", "cullface": "north" },
+                "south": { "uv": [ 0, 0, 16, 16 ], "texture": "#bottom", "cullface": "south" },
+                "west":  { "uv": [16, 0,  0, 16 ], "texture": "#side", "cullface": "west" },
+                "east":  { "uv": [ 0, 0, 16, 16 ], "texture": "#side", "cullface": "east" }
+            }
+        }
+    ]
+}

public/assets/minecraft/models/block/observer/on.json

@@ -0,0 +1,10 @@
+{
+    "parent": "block/observer/off",
+    "textures": {
+        "bottom": "block/observer/back_on",
+        "side": "block/observer/side_on",
+        "top": "block/observer/top_on",
+        "front": "block/observer/front_on",
+        "particle": "block/observer/front_on"
+    }
+}