Make example data more interesting

[ivan-aksamentov]

To attract a first-time user's attention we might add some example data that allows to showcase some of the interesting features of the application.

That would include, for example:

• more sequences (roughly to cover table height on a typical 1080p screen), to add diversity and demonstrate analysis speed
• several sequences with QC warnings
• a few sequences with errors
• sequences from different countries, with names that can be filtered in an interesting way
• sequences with mutations and aminoacid changes that can be filtered in an interesting way
• sequences targeting specifically on demonstrating a particular feature

This does not have to be real-world data, can be any dummy sequences, with appropriately dummy names.

Care should be taken to not break any licenses. If sequence is edited (e.g. to showcase gaps and corresponding QC feature), then name of the sequence should be modified.

We may implement a little interactive walktrough demo in the form of a series of popup boxes or alerts, encouraging user to try some of the features. This demo would only be available when loading example data and with a possibility to skip and disable it (with a flag saved in the local storage).

[ivan-aksamentov]

This was implemented in the form of Nextclade Datasets.