[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/characterCards.ts

@@ -329,7 +329,7 @@ async function importSpecv2(card:CharacterCardV2, img?:Uint8Array, mode?:'hub'|'
     let customScripts:customscript[] = []
     let utilityBot = false
     let sdData = defaultSdDataFunc()
-    let extAssets:[string,string][] = []
+    let extAssets:[string,string,string][] = []
 
     if(risuext){
         if(risuext.emotions){
@@ -350,8 +350,11 @@ async function importSpecv2(card:CharacterCardV2, img?:Uint8Array, mode?:'hub'|'
                     msg: `Loading... (Getting Assets ${i} / ${risuext.additionalAssets.length})`
                 })
                 await sleep(10)
-                const imgp = await saveAsset(mode === 'hub' ? (await getHubResources(risuext.additionalAssets[i][1])) :Buffer.from(risuext.additionalAssets[i][1], 'base64'))
-                extAssets.push([risuext.additionalAssets[i][0],imgp])
+                let fileName = ''
+                if(risuext.additionalAssets[i].length >= 3)
+                    fileName = risuext.additionalAssets[i][2]
+                const imgp = await saveAsset(mode === 'hub' ? (await getHubResources(risuext.additionalAssets[i][1])) :Buffer.from(risuext.additionalAssets[i][1], 'base64'), '', fileName)
+                extAssets.push([risuext.additionalAssets[i][0],imgp,fileName])
             }
         }
         bias = risuext.bias ?? bias
@@ -756,7 +759,7 @@ type CharacterCardV2 = {
                 customScripts?:customscript[]
                 utilityBot?: boolean,
                 sdData?:[string,string][],
-                additionalAssets?:[string,string][],
+                additionalAssets?:[string,string,string][],
                 backgroundHTML?:string
             }
         }