Implement SD15 Support (#44)

* Add SD15 decoder support

* Support fg generation

* Refactor

* Rename category

* Add joint support

* Standalone joint node

* Fix cond mark

* CondJoint

* Patch ComfyUI

* Add split decoder

* refactor existing nodes

* Update examples

examples/layer_diffusion_fg_example.json

@@ -169,46 +169,6 @@
         "Node name for S&R": "VAEDecode"
       }
     },
-    {
-      "id": 13,
-      "type": "LayeredDiffusionApply",
-      "pos": [
-        468,
-        -2
-      ],
-      "size": {
-        "0": 327.8314208984375,
-        "1": 106.42147827148438
-      },
-      "flags": {},
-      "order": 2,
-      "mode": 0,
-      "inputs": [
-        {
-          "name": "model",
-          "type": "MODEL",
-          "link": 18
-        }
-      ],
-      "outputs": [
-        {
-          "name": "MODEL",
-          "type": "MODEL",
-          "links": [
-            19
-          ],
-          "shape": 3,
-          "slot_index": 0
-        }
-      ],
-      "properties": {
-        "Node name for S&R": "LayeredDiffusionApply"
-      },
-      "widgets_values": [
-        "Conv Injection",
-        1
-      ]
-    },
     {
       "id": 20,
       "type": "PreviewImage",
@@ -318,7 +278,7 @@
         "Node name for S&R": "KSampler"
       },
       "widgets_values": [
-        618887785731141,
+        984560333937969,
         "randomize",
         20,
         8,
@@ -447,7 +407,7 @@
       ],
       "size": {
         "0": 210,
-        "1": 46
+        "1": 102
       },
       "flags": {},
       "order": 7,
@@ -488,7 +448,11 @@
       ],
       "properties": {
         "Node name for S&R": "LayeredDiffusionDecode"
-      }
+      },
+      "widgets_values": [
+        "SDXL",
+        16
+      ]
     },
     {
       "id": 28,
@@ -566,6 +530,46 @@
       "properties": {
         "Node name for S&R": "InvertMask"
       }
+    },
+    {
+      "id": 13,
+      "type": "LayeredDiffusionApply",
+      "pos": [
+        468,
+        -2
+      ],
+      "size": {
+        "0": 327.8314208984375,
+        "1": 106.42147827148438
+      },
+      "flags": {},
+      "order": 2,
+      "mode": 0,
+      "inputs": [
+        {
+          "name": "model",
+          "type": "MODEL",
+          "link": 18
+        }
+      ],
+      "outputs": [
+        {
+          "name": "MODEL",
+          "type": "MODEL",
+          "links": [
+            19
+          ],
+          "shape": 3,
+          "slot_index": 0
+        }
+      ],
+      "properties": {
+        "Node name for S&R": "LayeredDiffusionApply"
+      },
+      "widgets_values": [
+        "SDXL, Conv Injection",
+        1
+      ]
     }
   ],
   "links": [