feat(attachment-uploader): adding loadingindicator to AttachmentUploader component.

[AuraOfDivinity]

Motivation

This PR adds a loading indicator to the AttachmentUploader component. The added LoadingIcon is reusable and takes in the size & color as props allowing it to be configured as necessary.

Fixes #153

Type of change:

Please delete options that are not relevant.

• New feature (non-breaking change which adds functionality)

Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I have added unit tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes

[marrouchi]

@AuraOfDivinity Awesome !

[marrouchi]

@AuraOfDivinity 👏

[marrouchi]

You don't have to add an extra state :

Suggested change

	const [isUploading, setIsUploading] = useState<boolean>(false);
	const { toast } = useToast();
	const { mutateAsync: uploadAttachment } = useUpload(EntityType.ATTACHMENT, {
	const { toast } = useToast();
	const { mutateAsync: uploadAttachment, isLoading } = useUpload(EntityType.ATTACHMENT, {