feat: add preset selection to Gradio UI (session based) (#1570)

* add preset selection

uses meta parsing to set presets in user session (UI elements only)

* add LoRA handling

* use default config as fallback value

* add preset refresh on "Refresh All Files" click

* add special handling for default_styles and default_aspect_ratio

* sort styles after preset change

* code cleanup

* download missing models from preset

* set default refiner to "None" in preset realistic

* use state_is_generating for preset selection change

* DRY output parameter handling

* feat: add argument --disable-preset-selection

useful for cloud provisioning to prevent model switches and keep models loaded

* feat: keep prompt when not set in preset, use more robust syntax

* fix: add default return values when preset download is disabled

https://github.com/mashb1t/Fooocus/issues/20

* feat: add translation for preset label

* refactor: unify preset loading methods in config

* refactor: code cleanup

args_manager.py

@@ -4,7 +4,10 @@ import os
 from tempfile import gettempdir
 
 args_parser.parser.add_argument("--share", action='store_true', help="Set whether to share on Gradio.")
+
 args_parser.parser.add_argument("--preset", type=str, default=None, help="Apply specified UI preset.")
+args_parser.parser.add_argument("--disable-preset-selection", action='store_true',
+                                help="Disables preset selection in Gradio.")
 
 args_parser.parser.add_argument("--language", type=str, default='default',
                                 help="Translate UI using json files in [language] folder. "