* support variant, enum, and union derives
This is the second stage of implementing #4308. It adds support for deriving
variant, enum, and union impls for `ComponentType`, `Lift`, and `Lower`. It
also fixes derived record impls for generic `struct`s, which I had intended to
support in my previous commit, but forgot to test.
Signed-off-by: Joel Dice <joel.dice@fermyon.com>
* deduplicate component-macro code
Thanks to @jameysharp for the suggestion!
Signed-off-by: Joel Dice <joel.dice@fermyon.com>
f252ae34ec