Add root module to API docs

Author: smokestacklightnin

docs/api_docs/python/tft.md

@@ -0,0 +1,3 @@
+# TensorFlow Transform `tft` Module
+
+::: tensorflow_transform

mkdocs.yml

@@ -124,3 +124,5 @@ nav:
       - Using tf.Transform with TensorFlow 2.x: tf2_support.md
       - Common Transformations: common_transformations.md
       - Data preprocessing best practices: tft_bestpractices.md
+  - API:
+      - tft: api_docs/python/tft.md

tensorflow_transform/__init__.py

@@ -41,3 +41,54 @@
   from tensorflow_transform import google  # pytype: disable=import-error # pylint: disable=g-import-not-at-top
 except ImportError:
   pass
+
+__all__ = [
+  "annotate_asset",
+  "apply_buckets",
+  "apply_buckets_with_interpolation",
+  "apply_pyfunc",
+  "apply_vocabulary",
+  "bag_of_words",
+  "bucketize",
+  "bucketize_per_key",
+  "compute_and_apply_vocabulary",
+  "count_per_key",
+  "covariance",
+  "DatasetMetadata",
+  "deduplicate_tensor_per_row",
+  "estimated_probability_density",
+  "get_analyze_input_columns",
+  "get_num_buckets_for_transformed_feature",
+  "get_transform_input_columns",
+  "hash_strings",
+  "histogram",
+  "make_and_track_object",
+  "max",
+  "mean",
+  "min",
+  "ngrams",
+  "pca",
+  "quantiles",
+  "scale_by_min_max",
+  "scale_by_min_max_per_key",
+  "scale_to_0_1",
+  "scale_to_0_1_per_key",
+  "scale_to_gaussian",
+  "scale_to_z_score",
+  "scale_to_z_score_per_key",
+  "segment_indices",
+  "size",
+  "sparse_tensor_left_align",
+  "sparse_tensor_to_dense_with_shape",
+  "sum",
+  "tfidf",
+  "TFTransformOutput",
+  "TransformFeaturesLayer",
+  "tukey_h_params",
+  "tukey_location",
+  "tukey_scale",
+  "var",
+  "__version__",
+  "vocabulary",
+  "word_count",
+]