Expand HDS template types

[jeffdaley]

• Adds the number type to the text argument of the Hds::BadgeCount and Hds::Badge Glint types. The docs specify string but in reality they both take any value; I'm specifying string | number as an internal type check.
• Makes the FlightIcon component available in gts files.

[jfreda]

• Adds the number type to the text argument of the Hds::BadgeCount and Hds::Badge Glint types. The docs specify string but in reality they both take any value; I'm specifying string | number as an internal type check.

Hmm, wondering how risky it is to diverge from the docs here. It seems reasonable that the any could change to string in the underlying implementation without notice if the docs are considered the API contract. Do we actually need to use number for this?

[jeffdaley]

Hmm, wondering how risky it is to diverge from the docs here. It seems reasonable that the any could change to string in the underlying implementation without notice if the docs are considered the API contract. Do we actually need to use number for this?

I wouldn't call it risky since I'm pretty sure all the tests would fail, but it's a fair point; the tradeoff probably isn't worth the minor headache were this to come up.