Add @force to foreign import

src/checker.hpp

@@ -98,6 +98,7 @@ struct AttributeContext {
 	bool    is_export;
 	bool    is_static;
 	bool    require_results;
+	bool    force_foreign_import;
 	String  link_name;
 	String  link_prefix;
 	isize   init_expr_list_count;
@@ -249,6 +250,8 @@ struct CheckerInfo {
 	PtrSet<Entity *>      minimum_dependency_set;
 	PtrSet<isize>         minimum_dependency_type_info_set;
 
+	Array<Entity *>       required_foreign_imports_through_force;
+
 
 	bool allow_identifier_uses;
 	Array<Ast *> identifier_uses; // only used by 'odin query'