Add video classification pipeline (#20151)

* 🚧 wip video classification pipeline

* 🚧 wip - add is_decord_available check

* 🐛 add missing import

* ✅ add tests

* 🔧 add decord to setup extras

* 🚧 add is_decord_available

* ✨ add video-classification pipeline

* 📝 add video classification pipe to docs

* 🐛 add missing VideoClassificationPipeline import

* 📌 add decord install in test runner

* ✅ fix url inputs to video-classification pipeline

* ✨ updates from review

* 📝 add video cls pipeline to docs

* 📝 add docstring

* 🔥 remove unused import

* 🔥 remove some code

* 📝 docfix

setup.py

@@ -103,6 +103,7 @@ _deps = [
     "cookiecutter==1.7.3",
     "dataclasses",
     "datasets!=2.5.0",
+    "decord==0.6.0",
     "deepspeed>=0.6.5",
     "dill<0.3.5",
     "evaluate>=0.2.0",
@@ -286,7 +287,7 @@ extras["vision"] = deps_list("Pillow")
 extras["timm"] = deps_list("timm")
 extras["natten"] = deps_list("natten")
 extras["codecarbon"] = deps_list("codecarbon")
-
+extras["video"] = deps_list("decord")
 
 extras["sentencepiece"] = deps_list("sentencepiece", "protobuf")
 extras["testing"] = (
@@ -332,6 +333,7 @@ extras["all"] = (
     + extras["timm"]
     + extras["codecarbon"]
     + extras["accelerate"]
+    + extras["video"]
 )
 
 # Might need to add doc-builder and some specific deps in the future