@FlowScoped should be allowed on method and annotation

Currently, @FlowScoped annotation can only target types. This makes it impossible to create flowscoped beans through @Produces methods or use @FlowScoped on a @Stereotype annotation.
#### Affected Versions
[2.2]

Start by locating the @FlowScoped annotation declaration and its target metadata. Check how producer methods and stereotype annotations are represented, then verify that both requested target forms are accepted for the affected version.

Written by the indexing model from the issue text.