windytron: Add Moloka'i stations and omit gust when reported as zero.

[tavdog]

Some stations report gust 0, which should display as average speed only rather than "avg g0".

[gemini-code-assist]

Code Review

This pull request adds new stations to the Windytron lookup and conditionally formats the wind text to omit gust speed when it is zero. The reviewer suggested improving this logic by omitting the gust speed whenever it is less than or equal to the average wind speed to prevent displaying nonsensical values.

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[gemini-code-assist]

A gust speed should only be displayed if it is strictly greater than the average wind speed. If a station reports a gust speed that is less than or equal to the average wind speed (including 0), it should be omitted to avoid displaying nonsensical values like 15g12.

Suggested change

	if wind_gust == 0:
	wind_text = "%d %s" % (wind_avg, display_units)
	else:
	wind_text = "%dg%d %s" % (wind_avg, wind_gust, display_units)
	if wind_gust <= wind_avg:
	wind_text = "%d %s" % (wind_avg, display_units)
	else:
	wind_text = "%dg%d %s" % (wind_avg, wind_gust, display_units)