UploadFolder support for Pinata cloud

[opensaucerer]

func UploadFolder(path string, options map[string]interface{}) ([]*types.UploadedFile, error) {
	return nil, nil
}

We'll need a function that efficiently walks the given directory in order to upload the files to Pinata...I haven't checked how Pinata folder upload works but I'm thinking there might be a need to make some updates to the func (c *Client) PostForm() method present in the request package.

[opensaucerer]

@CeoFred Here... I also sent you an invite to the repository.

[joey1123455]

Just checking to confirm if this issues is actually still open