[feat] Add support for chat stickers (#178)

# PR Checklist
- [x] Did you check if it works normally in all models? *ignore this
when it dosen't uses models*
- [x] Did you check if it works normally in all of web, local and node
hosted versions? if it dosen't, did you blocked it in those versions?
- [x] Did you added a type def?

# Description
- This commit adds support for chat stickers by allowing users to use
stickers in chat message window.
- The users can toggle show additional asset list using a button.
- Added Additional assets file extension data.
- Added option for additional assets preview.
- Optimized render when use streaming api. (prevent markdown again when
message not changed)
Added controls to Video/Audio Assets


[Video11.webm](https://github.com/kwaroran/RisuAI/assets/11344967/8980282f-d001-4afc-a6d9-6f6369b4cd4c)


[Video12.webm](https://github.com/kwaroran/RisuAI/assets/11344967/e0e153b8-eba6-48a5-b47d-d2dd287f32fd)

src/ts/storage/database.ts

@@ -342,7 +342,7 @@ export interface character{
         VOLUME_SCALE?: number
     }
     supaMemory?:boolean
-    additionalAssets?:[string, string][]
+    additionalAssets?:[string, string, string][]
     ttsReadOnlyQuoted?:boolean
     replaceGlobalNote:string
     backgroundHTML?:string
@@ -525,7 +525,9 @@ export interface Database{
             expires_in?: number
         }
     },
-    classicMaxWidth: boolean
+    classicMaxWidth: boolean,
+    useChatSticker:boolean,
+    useAdditionalAssetsPreview:boolean,
 }
 
 interface hordeConfig{
@@ -564,6 +566,7 @@ export interface Chat{
     supaMemoryData?:string
     lastMemory?:string
     suggestMessages?:string[]
+    isStreaming?:boolean
 }
 
 export interface Message{