Synchronize all parts (molstar, viewer, protvista) by AUTH chainId instead of STRUCT asymId

[p3rcypj]

📌 References

• PR: Along with #14 on pdbe-molstar
• Issue: Closes https://app.clickup.com/t/d52cg6

📝 Implementation

• Changed all STRUCT asym id references for chains, to AUTH chain id
• Sync with SequenceViewer on chain is changed, and when ligand is selected
• Fixed sync with protvista
• Emdb is now load at the first init along with pdb, in order to not make selection re-update
• Chains dropdown is now disabled in ligand view
• Ligand dropdown now will appear always but disabled whenever that chain does not have ligands
• Minor fix: EBI is returning duplicated entries in search -> removed duplicates from response

[tokland]

In-line comments:

[p3rcypj]

I rewrote most of the responsibilities on usePluginRef, I hope now it makes more sense by reading it. Abstracting it into smaller functions was a really good point because it made me review all the scenarios again several times and when the code was really executed I ended up removing unnecessary code. Thanks!!

[tokland]

All good, code-wise 👍