[Feature Request] More trig operations in `elementwise`

[lsh]

What is your request?

The graph.ops.elementwise module is missing some useful operations, notably: tan (as opposed to tanh), acos, asin, and atan.

What is your motivation for this change?

These are basic trig operations that make sense to coincide with the other ops already there (such as sin, cos, and tanh).

Any other details?

No response