Consistent serotype-genotype column names and auspice color titles

[j23414]

Description of proposed changes

For Dengue serotype, genotype, and the various methods we employ to derive them for a specific strain (NCBI, Nextclade, augur clades (Nextstrain)), this PR is an implementation of consistent metadata column names and auspice color titles following the plan in https://github.com/nextstrain/dengue/issues/41#issuecomment-2113248913

Related issue(s)

• https://github.com/nextstrain/dengue/issues/41

Checklist

• [x] Checks pass
• [x] Test builds
  • [x] Ingest (see run here)
  • [x] Phylogenetic (see run here)

Link to test builds from this branch:

	genome	E gene
all	all/genome	all/E
denv1	denv1/genome	denv1/E
denv2	denv2/genome	denv2/E
denv3	denv3/genome	denv3/E
denv4	denv4/genome	denv4/E

or for a visual summary of the default color titles for the different trees: