Add DePlot + MatCha on transformers (#22528)

* add deplot + matcha on `transformers`

* more docs

* correct path

* Update docs/source/en/model_doc/deplot.mdx

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

* fix

* use auto processor

* Update docs/source/en/model_doc/matcha.mdx

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

* make fixup

* Update docs/source/en/model_doc/deplot.mdx

Co-authored-by: NielsRogge <48327001+NielsRogge@users.noreply.github.com>

* add correct names

---------

Co-authored-by: Sylvain Gugger <35901082+sgugger@users.noreply.github.com>
Co-authored-by: NielsRogge <48327001+NielsRogge@users.noreply.github.com>

docs/source/en/_toctree.yml

@@ -572,6 +572,8 @@
         title: CLIPSeg
       - local: model_doc/data2vec
         title: Data2Vec
+      - local: model_doc/deplot
+        title: DePlot
       - local: model_doc/donut
         title: Donut
       - local: model_doc/flava
@@ -592,6 +594,8 @@
         title: LiLT
       - local: model_doc/lxmert
         title: LXMERT
+      - local: model_doc/matcha
+        title: MatCha
       - local: model_doc/mgp-str
         title: MGP-STR
       - local: model_doc/oneformer