feat(src/djinit/core): adduse_docker and use_vite configuration flags

Add `use_docker` and `use_vite` boolean fields to `ProjectMetadata` and include them in the metadata dictionary serialization.

- New feature: expose Docker and Vite enable flags.
- Enhancement: extend metadata output to reflect the new configuration options.

src/djinit/core/types.py

@@ -17,6 +17,8 @@ class ProjectMetadata:
     database_type: str = "postgresql"
     use_tailwind: bool = False
     use_htmx: bool = False
+    use_docker: bool = False
+    use_vite: bool = False
     predefined_structure: bool = False
     unified_structure: bool = False
     single_structure: bool = False
@@ -33,6 +35,8 @@ class ProjectMetadata:
             "database_type": self.database_type,
             "use_tailwind": self.use_tailwind,
             "use_htmx": self.use_htmx,
+            "use_docker": self.use_docker,
+            "use_vite": self.use_vite,
             "predefined_structure": self.predefined_structure,
             "unified_structure": self.unified_structure,
             "single_structure": self.single_structure,