Recipe and Input class definitions with e2e export

Pull Request resolved: #10034


ghstack-source-id: 282298048
@exported-using-ghexport

Differential Revision: [D71946730](https://our.internmc.facebook.com/intern/diff/D71946730/)

Author: tarun292

export/TARGETS

@@ -0,0 +1,38 @@
+load("@fbcode_macros//build_defs:python_library.bzl", "python_library")
+
+oncall("executorch")
+
+python_library(
+    name = "recipe",
+    srcs = [
+        "recipe.py",
+    ],
+    deps = [
+        "//caffe2:torch",
+        "//executorch/exir/backend:backend_api",
+        "//executorch/exir:pass_manager",
+        "//executorch/devtools/backend_debug:delegation_info",
+    ]
+)
+
+python_library(
+    name = "export",
+    srcs = [
+        "export.py",
+    ],
+    deps = [
+        ":recipe",
+        "//executorch/runtime:runtime",
+    ]
+)
+
+python_library(
+    name = "lib",
+    srcs = [
+        "__init__.py",
+    ],
+    deps = [
+        ":export",
+        ":recipe",
+    ],
+)

export/__init__.py

@@ -0,0 +1,24 @@
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+"""
+ExecuTorch export module.
+
+This module provides the tools and utilities for exporting PyTorch models
+to the ExecuTorch format, including configuration, quantization, and
+export management.
+"""
+
+# pyre-strict
+
+from .export import export, ExportSession
+from .recipe import ExportRecipe
+
+__all__ = [
+    "ExportRecipe",
+    "ExportSession",
+    "export",
+]