[feat] Add support for chat stickers

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.
Additional assets list shows preview.
Optimized render when use streaming api. (prevent markdown again when message not changed)
Added controls to Video/Audio Assets

src/lib/ChatScreens/AssetInput.svelte

@@ -0,0 +1,75 @@
+<script lang="ts">
+	import { get } from 'svelte/store';
+    import { FileAudioIcon, PlusIcon } from "lucide-svelte";
+    import { DataBase, setDatabase, type character, type groupChat } from "src/ts/storage/database";
+    import { getFileSrc, saveAsset } from "src/ts/storage/globalApi";
+    import { selectMultipleFile } from "src/ts/util";
+    export let currentCharacter:character|groupChat;
+    export let onSelect:(additionalAsset:[string,string,string])=>void;
+    let assetFileExtensions:string[] = []
+    let assetFilePath:string[] = []
+
+    $:{
+        if(currentCharacter.type ==='character'){
+            if(currentCharacter.additionalAssets){
+                for(let i = 0; i < currentCharacter.additionalAssets.length; i++){
+                    // console.log('check content type ...', currentCharacter.additionalAssets[i][0], currentCharacter.additionalAssets[i][1]);
+                    if(currentCharacter.additionalAssets[i].length > 2 && currentCharacter.additionalAssets[i][2]) {
+                        assetFileExtensions[i] = currentCharacter.additionalAssets[i][2]
+                    } else {
+                        assetFileExtensions[i] = currentCharacter.additionalAssets[i][1].split('.').pop()
+                    }
+                    getFileSrc(currentCharacter.additionalAssets[i][1]).then((filePath) => {
+                        assetFilePath[i] = filePath
+                    })
+                }
+            }
+        }
+    }
+</script>
+{#if currentCharacter.type ==='character'}
+    <button class="hover:text-green-500 bg-gray-500 flex justify-center items-center w-16 h-16 m-1 rounded-md" on:click={async () => {
+        if(currentCharacter.type === 'character'){
+            const da = await selectMultipleFile(['png', 'webp', 'mp4', 'mp3', 'gif'])
+            currentCharacter.additionalAssets = currentCharacter.additionalAssets ?? []
+            if(!da){
+                return
+            }
+            for(const f of da){
+                console.log(f)
+                const img = f.data
+                const name = f.name
+                const extension = name.split('.').pop().toLowerCase()
+                const imgp = await saveAsset(img,'',extension)
+                currentCharacter.additionalAssets.push([name, imgp, extension])
+                currentCharacter = currentCharacter
+            }
+            const db = get(DataBase);
+            setDatabase(db)
+        }
+    }}>
+        <PlusIcon />
+    </button>
+    {#if currentCharacter.additionalAssets}
+        {#each currentCharacter.additionalAssets as additionalAsset, i}
+                <button on:click={()=>{
+                    onSelect(additionalAsset)
+                }}>
+                    {#if assetFilePath[i]}
+                        {#if assetFileExtensions[i] === 'mp4'}
+                            <!-- svelte-ignore a11y-media-has-caption -->
+                            <video class="w-16 h-16 m-1 rounded-md"><source src={assetFilePath[i]} type="video/mp4"></video>
+                        {:else if assetFileExtensions[i] === 'mp3'}
+                            <div class='w-16 h-16 m-1 rounded-md bg-slate-500 flex flex-col justify-center items-center'>
+                                <FileAudioIcon/>
+                                <div class='w-16 px-1 text-ellipsis whitespace-nowrap overflow-hidden'>{additionalAsset[0]}</div>
+                            </div>
+                            <!-- <audio controls class="w-16 h-16 m-1 rounded-md"><source src={assetPath} type="audio/mpeg"></audio> -->
+                        {:else}
+                        <img src={assetFilePath[i]} class="w-16 h-16 m-1 rounded-md" alt={additionalAsset[0]}/>
+                        {/if}
+                    {/if}
+                </button>
+        {/each}
+    {/if}
+{/if}