feat(aklive2d): many changes

- generalized env_generator
- fixed content_processor
- updated config to add fields
- removed redundant fields in config

config/mizuki_summer_feast.yaml

@@ -1,7 +1,4 @@
-link: mizuki_summer_feast
-type: skin
 date: 2022/12
-title: 'Arknights: Summer Feast / Mizuki - 明日方舟：夏日餮宴·水月'
 filename: dyn_illust_char_437_mizuki_sale#7
 logo: logo_higashi
 fallback_name: char_437_mizuki_sale#7
@@ -9,4 +6,8 @@ viewport_left: 0
 viewport_right: 0
 viewport_top: 0
 viewport_bottom: 0
-invert_filter: true
+invert_filter: true
+color: rgb(156, 210, 246)
+codename: 
+  zh-CN: 夏日餮宴 · 水月
+  en-US: Summer Feast / Mizuki