Fixes#102#351
Migrating support from Incentive for the following:
- Nucleic Acid builder in the Builder panel (Jarrett Johnson @JarrettSJohnson)
- `fnab` command to build nucleic acid chains by sequence (Jarrett Johnson @JarrettSJohnson)
- Improvements to nucleic acid building from native structures (Thomas Stewart @TstewDev)
- highlight attachment points for improved usability (Thomas Holder @speleo3)
Co-authored-by: Jarrett Johnson <jarrett.johnson@schrodinger.com>
Co-authored-by: Thomas Stewart <thomas.stewart@schrodinger.com>
Co-authored-by: Thomas Holder <thomas@thomas-holder.de>
