(Better) support for Java records in Native Types

[dteleguin]

I was experimenting with Native Types (kudos again!) and Java records. Reading records from CEL works just fine, but I have discovered a couple of issues with inline record instantiation (e.g. Foo{bar: 'baz'}):

• no-arg constructor is required, which is normally not used with records;
• records are using prefix-less setters which CEL does not (yet) recognize. Just in case, this convention is not uncommon in the "traditional" (non-record) value classes; see JsonWebToken in Keycloak.

[l46kok]

CEL-Java currently lacks official support for records to maintain Java 8 compatibility. We will add support once we upgrade to Java 14 or later.