This allows us to recreate soong config value variables in selects.
This adds a new "any" pattern to selects, which is the same as "default"
except that it doesn't match undefined variables, and it's (currently)
the only pattern that can accept a binding.
The syntax looks like:
```
select(soong_config_variable("my_namespace", "my_variable"), {
any @ my_binding: "foo" + my_binding,
default: "other value",
})
```
Bug: 323382414
Test: m nothing --no-skip-soong-tests
Change-Id: I4feb4073172d8797dee5472f43f9c248a76c3f1f
738bb54ded
