CLI: Better error when loading plain fasta

[dariober]

Describe the bug

Loading plain fasta files from the CLI is possible with -e flag, but error message doesn't say it.

To Reproduce Steps to reproduce the behavior:

cd packages/apollo-cli
yarn dev assembly add-from-fasta test_data/tiny.fasta -a vv1 
Error: Only bgzip'd and indexed fasta files are supported at the moment. "test_data/tiny.fasta.gzi" is neither a file or a file id

Expected behavior

Error message should include something like:

Use -e/--editable to load an uncompressed fasta file

Version information:

Commit 27ab9cc

yarn dev --version
@apollo-annotation/cli/0.3.0 linux-x64 node-v20.13.0