Implement logical_not, local_and, logical_or, logical_xor in dpctl.tensor

[oleksandr-pavlyk]

Implement

• logical_not per array API spec
• logical_and per array API spec
• logical_or per array API spec
• logical_xor per array API spec

These are going to be useful to test comparison operators too.

These are supported for all supported types, and treat non-boolean types via convert_impl<bool, srcTy>(const srcTy &val).

[ndgrigorian]

Resolved by #1270