feat: treat CDS as a valid feature for GFFs in `load_features` #1805

Job	Run time
pathogen-repo-ci (avian-flu)	1m 5s
pathogen-repo-ci (ebola)	53s
test (python=3.8 biopython=1.76)	6m 48s
pathogen-repo-ci (lassa)	1m 6s
test (python=3.8 biopython=1.79)	9m 28s
pathogen-repo-ci (mumps)	55s
test (python=3.8 biopython=1.80)	6m 40s
pathogen-repo-ci (ncov)	1m 19s
test (python=3.8 biopython=latest)	11m 26s
pathogen-repo-ci (rsv)	2m 36s
test (python=3.9 biopython=1.79)	8m 57s
pathogen-repo-ci (seasonal-flu)	1m 13s
test (python=3.9 biopython=1.80)	6m 30s
pathogen-repo-ci (tb)	1m 18s
test (python=3.9 biopython=latest)	6m 50s
pathogen-repo-ci (zika)	1m 15s
test (python=3.10 biopython=1.80)	10m 15s
test (python=3.10 biopython=latest)	8m 32s
test (python=3.11 biopython=1.80)	6m 52s
test (python=3.11 biopython=latest)	7m 7s
build-docs / build-conda	0s
build-docs / build-pip	54s
codecov	17s
	1h 42m 16s

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