Add depth estimation pipeline (#18618)

* Add initial files for depth estimation pipelines

* Add test file for depth estimation pipeline

* Update model mapping names

* Add updates for depth estimation output

* Add generic test

* Hopefully fixing the tests.

* Check if test passes

* Add make fixup and make fix-copies changes after rebase with main

* Rebase with main

* Fixing up depth pipeline.

* This is not used anymore.

* Fixing the test. `Image` is a module `Image.Image` is the type.

* Update docs/source/en/main_classes/pipelines.mdx

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

Co-authored-by: Nicolas Patry <patry.nicolas@protonmail.com>
Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>

docs/source/en/main_classes/pipelines.mdx

@@ -25,6 +25,7 @@ There are two categories of pipeline abstractions to be aware about:
   - [`AudioClassificationPipeline`]
   - [`AutomaticSpeechRecognitionPipeline`]
   - [`ConversationalPipeline`]
+  - [`DepthEstimationPipeline`]
   - [`DocumentQuestionAnsweringPipeline`]
   - [`FeatureExtractionPipeline`]
   - [`FillMaskPipeline`]
@@ -344,12 +345,16 @@ That should enable you to do all the custom code you want.
     - __call__
     - all
 
+### DepthEstimationPipeline
+[[autodoc]] DepthEstimationPipeline
+    - __call__
+    - all 
+
 ### DocumentQuestionAnsweringPipeline
 
 [[autodoc]] DocumentQuestionAnsweringPipeline
     - __call__
     - all
-
 ### FeatureExtractionPipeline
 
 [[autodoc]] FeatureExtractionPipeline

docs/source/en/model_doc/auto.mdx

@@ -82,6 +82,10 @@ Likewise, if your `NewModel` is a subclass of [`PreTrainedModel`], make sure its
 
 [[autodoc]] AutoModelForCausalLM
 
+## AutoModelForDepthEstimation
+
+[[autodoc]] AutoModelForDepthEstimation
+
 ## AutoModelForMaskedLM
 
 [[autodoc]] AutoModelForMaskedLM