extra networks UI

rework of hypernets: rather than via settings, hypernets are added directly to prompt as <hypernet:name:weight>

modules/ui_extra_networks_hypernets.py

@@ -0,0 +1,34 @@
+import os
+
+from modules import shared, ui_extra_networks
+
+
+class ExtraNetworksPageHypernetworks(ui_extra_networks.ExtraNetworksPage):
+    def __init__(self):
+        super().__init__('Hypernetworks')
+
+    def refresh(self):
+        shared.reload_hypernetworks()
+
+    def list_items(self):
+        for name, path in shared.hypernetworks.items():
+            path, ext = os.path.splitext(path)
+            previews = [path + ".png", path + ".preview.png"]
+
+            preview = None
+            for file in previews:
+                if os.path.isfile(file):
+                    preview = "./file=" + file.replace('\\', '/') + "?mtime=" + str(os.path.getmtime(file))
+                    break
+
+            yield {
+                "name": name,
+                "filename": path,
+                "preview": preview,
+                "prompt": f"<hypernet:{name}:1.0>",
+                "local_preview": path + ".png",
+            }
+
+    def allowed_directories_for_previews(self):
+        return [shared.cmd_opts.hypernetwork_dir]
+