Updates to genomic coordinate conversion utility

[ahwagner]

Please see the note for clarifying the convert coordinates utility described in cancervariants/fusor#172 (comment).

[jsstevenson]

I'm calling this a "high priority" for now but we can reassess if necessary

[korikuzma]

@jarbesfeld said in addition to above, it would be useful to have a helper tip that explains what the input should be.

Genomic Start Coordinate: Genomic position where the transcript segment starts
Genomic End Coordinate: Genomic position where the transcript segment ends