BusyIndicator: new component

[jbadan]

Description

SAP/fundamental-styles#412
https://fundamental-styles.netlify.com/components/busy-indicator.html

NOTE: Where applicable, please include uncropped screen captures.

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After triaging an issue, the fundamental-react team will see if it can be reproduced or confirmed. If more information is needed, the fundamental-react team will contact the author. Any issues awaiting responses from the author for more than 7 days will be closed. The author can re-open the issue at a later time if they can present the requested information.

[jbadan]

related to #797

[jbadan]

fixed by #963