Limb darkening and filter matching API improvements

• Improved filter matching and presentation logic
• API improvements to support isolation of Limb Darkening functionality into OOP components
• Integrating new filter logic with UI -- Clarify and simplify filter selection

What's Changed

• Minor bug fixes and unified filter detection by @jpl-jengelke in #1214 and #1215
• Issue 1165: Checking datasets for MObs and Conforming w/ New Limb Darkening Updates by @tamimfatahi in #1217
• Additional filter modifications by @jpl-jengelke in #1219
• Release merge for EXOTIC 3.2.1 by @jpl-jengelke in #1220

Full Changelog: 3.2.0...3.2.2