[NEB-245] Limit image format types for upload (#7019)

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## PR-Codex overview
This PR focuses on enhancing the `ImageUploadButton` component by allowing it to accept specific image file types and updating the `ChatBar` component to utilize this feature.

### Detailed summary
- In `ChatBar.tsx`, added `accept` attribute with value `"image/jpeg,image/png,image/webp"` to the file input.
- In `image-upload-button.tsx`, changed `accept` property from a static value `"image/*"` to a dynamic value using `props.accept`.
- Updated `ImageUploadButton` to include `accept` in its props definition.

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Author: MananTank

apps/dashboard/src/@/components/ui/image-upload-button.tsx

@@ -11,6 +11,7 @@ interface ImageUploadProps {
   variant?: React.ComponentProps<typeof Button>["variant"];
   className?: string;
   multiple?: boolean;
+  accept: string;
 }
 
 export function ImageUploadButton(props: ImageUploadProps) {
@@ -34,7 +35,7 @@ export function ImageUploadButton(props: ImageUploadProps) {
         ref={fileInputRef}
         type="file"
         multiple={props.multiple}
-        accept="image/*"
+        accept={props.accept}
         onChange={handleFileChange}
         className="hidden"
         aria-label="Upload image"

apps/dashboard/src/app/nebula-app/(app)/components/ChatBar.tsx

@@ -254,6 +254,7 @@ export function ChatBar(props: {
                 <ImageUploadButton
                   multiple
                   value={undefined}
+                  accept="image/jpeg,image/png,image/webp"
                   onChange={(files) => {
                     const totalFiles = files.length + images.length;