When working in a monorepo environment, it can be desirable to generate
Go SDKs into a structure less like the upstream SDKs, and more like
this:
github.com/x/mymonorepo/sdk/go/package-name
Where `package-name` is also the root of a Go module. Since
`package-name` is not a valid package name in Go, it's also desirable to
be able to choose a replacement name and reduce the amount of nesting.
This commit adds a new Go option to the schema, `rootPackageName`, which
can be used to modify the generated root package name (e.g. to
`mypackage` instead of `package-name`, and remove the additional layer
of nesting.
Test coverage is added to ensure that the correct file structure and
package names are generated.
This change adds schema and codegen support for plain properties which
are emitted typed as the plain type rather than wrapped as an `Input`.
Plain properties require a prompt value and do not accept a value that
is `Output`.
