feat(aklive2d): many changes

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

config/dusk.yaml

@@ -1,7 +1,4 @@
-link: dusk
-type: operator
 date: 2021/02
-title: 'Arknights: Dusk - 明日方舟：夕'
 filename: dyn_illust_char_2015_dusk
 logo: logo_sui
 fallback_name: char_2015_dusk_2
@@ -9,4 +6,8 @@ viewport_left: 0
 viewport_right: 0
 viewport_top: 0
 viewport_bottom: 0
-invert_filter: true
+invert_filter: true
+color: rgb(9, 212, 208)
+codename: 
+  zh-CN: 夕
+  en-US: Dusk