Add frequencies panel

[j23414]

Context

As part of broader issue to add frequency panels to pathogen pipelines nextstrain/public#6

A frequencies panel provides a dynamic representation of how genetic variants or clades change over time. This visual aid helps researchers and public health officials to:

• Track the rise and fall of specific mutations or lineages
• Identify emerging trends in pathogen evolution
• Observe seasonal patterns or other temporal dynamics

Description

Add a frequencies panel to the different dengue trees using augur frequencies.

Examples

Follow pattern from yellow-fever and measles pipelines.

Possible solution

(Optional)