feat(sidekick): make extra modules public (#2622)

In the far future we may want some public and some private modules, but
this is what we need now.

Author: coryan

internal/sidekick/internal/rust/templates/crate/src/lib.rs.mustache

@@ -144,5 +144,5 @@ pub(crate) mod info {
 
 {{/Codec.HasServices}}
 {{#Codec.ExtraModules}}
-mod {{{.}}};
+pub mod {{{.}}};
 {{/Codec.ExtraModules}}

internal/sidekick/internal/rust/templates/nosvc/src/lib.rs.mustache

@@ -40,5 +40,5 @@ limitations under the License.
 {{/HasDeprecatedEntities}}
 pub mod model;
 {{#Codec.ExtraModules}}
-mod {{{.}}};
+pub mod {{{.}}};
 {{/Codec.ExtraModules}}