Serverless GPU support on banana.dev (#106)

* serverless: implement banana backend for both audio and LLM

Related to monadical-sas/reflector-gpu-banana project

* serverless: got llm working on banana !

* tests: fixes

* serverless: fix dockerfile to use fastapi server + httpx

server/reflector/storage/base.py

@@ -0,0 +1,47 @@
+from pydantic import BaseModel
+from reflector.settings import settings
+import importlib
+
+
+class FileResult(BaseModel):
+    filename: str
+    url: str
+
+
+class Storage:
+    _registry = {}
+    CONFIG_SETTINGS = []
+
+    @classmethod
+    def register(cls, name, kclass):
+        cls._registry[name] = kclass
+
+    @classmethod
+    def get_instance(cls, name, settings_prefix=""):
+        if name not in cls._registry:
+            module_name = f"reflector.storage.storage_{name}"
+            importlib.import_module(module_name)
+
+        # gather specific configuration for the processor
+        # search `TRANSCRIPT_BACKEND_XXX_YYY`, push to constructor as `backend_xxx_yyy`
+        config = {}
+        name_upper = name.upper()
+        config_prefix = f"{settings_prefix}{name_upper}_"
+        for key, value in settings:
+            if key.startswith(config_prefix):
+                config_name = key[len(settings_prefix) :].lower()
+                config[config_name] = value
+
+        return cls._registry[name](**config)
+
+    async def put_file(self, filename: str, data: bytes) -> FileResult:
+        return await self._put_file(filename, data)
+
+    async def _put_file(self, filename: str, data: bytes) -> FileResult:
+        raise NotImplementedError
+
+    async def delete_file(self, filename: str):
+        return await self._delete_file(filename)
+
+    async def _delete_file(self, filename: str):
+        raise NotImplementedError