Add JIT support for cmath unary ops (#54089)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/54089
**This PR adds:**
1. support for the following [cmath](https://docs.python.org/3/library/cmath.html) functions:
- Power and logarithmic functions (`cmath.{exp, log, log10, sqrt}`)
- Trigonometric functions (`cmath.{sin, cos, tan, asin, acos, atan}`)
- Hyperbolic functions (`cmath.{sinh, cos, tanh, asinh, acosh, atanh}`)
- `cmath.phase()`
2. `abs()`
**Future work:**
1. support
- `cmath.{polar, rect}`
- classification functions (`cmath.{isfinite, isnan, isinf, isclose}`)
- constants (`cmath.{pi, e, inf, nan, infj, nanj}`)
Test Plan: Imported from OSS
Reviewed By: ezyang
Differential Revision: D27339149
Pulled By: anjali411
fbshipit-source-id: fe1a019c95adbc9f27f7948eb28c0c3b93d8c026
