Add documentation for dpctl.tensor._flags.Flags class

Author: ndgrigorian

docs/doc_sources/api_reference/dpctl/flags.rst

@@ -0,0 +1,24 @@
+.. _Flags_class:
+
+``Flags`` class
+===================
+
+Helper class for querying information about the memory layout of an array.
+
+    Note that dictionary-like access to some members is permitted:
+
+        "C", "C_CONTIGUOUS":
+            Equivalent to `c_contiguous`
+        "F", "F_CONTIGUOUS":
+            Equivalent to `f_contiguous`
+        "W", "WRITABLE":
+            Equivalent to `writable`
+        "FC":
+            Equivalent to `fc`
+        "FNC":
+            Equivalent to `fnc`
+        "FORC", "CONTIGUOUS":
+            Equivalent to `forc` and `contiguous`
+
+.. autoclass:: dpctl.tensor._flags.Flags
+    :members:

docs/doc_sources/api_reference/dpctl/tensor.usm_ndarray.rst

@@ -23,3 +23,8 @@ Implementation of :py:class:`usm_ndarray` conforms to
 .. _dpctl_tensor_usm_ndarray_to_device_example:
 
 .. include:: examples/usm_ndarray.rst
+
+.. toctree::
+    :hidden:
+
+    flags