fix: remove persistence nullability

fix: add missing walk and visit methods for bindings. (LEGO#191)

refactor: improve bindings TryGetValue (LEGO#190)

ci: include license in package (LEGO#174)

test: use raw strings (LEGO#164)

fix: long values for missing retention properties

fix: updated topic configuration data types

cyclic reference fixes

feat(bindings): update FilterPolicy to match AWS API (LEGO#128)

Co-authored-by: adam.gloyne <[email protected]>

fix: add missing properties to json schema (LEGO#124)