Add Flutter Gemma MediaPipe task bundle

.gitattributes

@@ -34,3 +34,4 @@ saved_model/**/* filter=lfs diff=lfs merge=lfs -text
 *.zst filter=lfs diff=lfs merge=lfs -text
 *tfevents* filter=lfs diff=lfs merge=lfs -text
 tokenizer.json filter=lfs diff=lfs merge=lfs -text
+functiongemma-270m-function-calling.task filter=lfs diff=lfs merge=lfs -text

functiongemma-270m-function-calling.task

@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:068757b3c6fe9ec8182fe11c2eb612423a0d77ff42cae20142476aff10f99820
+size 284244050