Move clip() to dpctl_ext/tensor and reuse it in dpnp

Author: vlad-perevezentsev

dpctl_ext/tensor/__init__.py

@@ -57,13 +57,15 @@
 )
 from dpctl_ext.tensor._reshape import reshape
 
+from ._clip import clip
 from ._type_utils import can_cast, finfo, iinfo, isdtype, result_type
 
 __all__ = [
     "asnumpy",
     "astype",
     "can_cast",
     "copy",
+    "clip",
     "extract",
     "eye",
     "finfo",