Validate input data

[fengelniederhammer]

When doing SILO preprocessing, validate the input data:

• Pango lineage alias
  • validate that it's a proper tree
• Metadata
  • primary keys are unique
  • validate data types of each field
  • Pango lineages have their alias defined
• sequences
  • primary key exists in metadata, is unique and every metadata primary key exists in sequences.
  • aligned sequences: verify length
• configuration files

Add tests that check the behavior.

[JonasKellerer]

"primary key exists in metadata, is unique and every metadata primary key exists in sequences." exists already

[fengelniederhammer]

Mind https://github.com/GenSpectrum/LAPIS-SILO/pull/215#discussion_r1413702056 and improve log messages

[fengelniederhammer]

Try to reproduce #361 and fix it.

[Taepper]

Also: Unit tests that execute the preprocessing in both paths