feat: add preprocessed Bavarian Wikipedia dump

.gitattributes

@@ -57,3 +57,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 # Video files - compressed
 *.mp4 filter=lfs diff=lfs merge=lfs -text
 *.webm filter=lfs diff=lfs merge=lfs -text
+bar_wikipedia.jsonl filter=lfs diff=lfs merge=lfs -text

bar_wikipedia.jsonl

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:acfa9c33196433a2a6717e4f3f8fca840ac7d42f86f2d635900a844d347370ec
+size 29061320