feat: add AODH Image Saver (Metadata), Lora Selector, Checkpoint Selector, and various node improvements

nodes/character_reader/characters/meiko.json

@@ -0,0 +1,35 @@
+{
+  "character_id": "meiko",
+  "identity": {
+    "base_specs": "1girl, mature female",
+    "hair": "brown hair, short hair",
+    "eyes": "brown eyes",
+    "expression": "smile, confident",
+    "hands": "",
+    "arms": "",
+    "torso": "medium breasts",
+    "pelvis": "",
+    "legs": "",
+    "feet": "",
+    "distinguishing_marks": ""
+  },
+  "wardrobe": {
+    "inner_layer": "red crop top, sleeveless",
+    "outer_layer": "",
+    "lower_body": "red skirt, mini skirt",
+    "footwear": "brown boots",
+    "gloves": "",
+    "accessories": "choker"
+  },
+  "styles": {
+    "aesthetic": "vocaloid, casual",
+    "primary_color": "red",
+    "secondary_color": "brown",
+    "tertiary_color": "black"
+  },
+  "lora": {
+    "lora_name": "",
+    "lora_weight": 1.0,
+    "lora_triggers": ""
+  }
+}