Adding vmap support for special bessel functions (#99543)
Fixes #91402
## Description
This PR adds vmap support for the following bessel functions under torch.special.
* special.bessel_j0
* special.bessel_y0
* special.bessel_j1
* special.modified_bessel_i0
* special.bessel_y1
* special.scaled_modified_bessel_k0
* special.scaled_modified_bessel_k1
* special.modified_bessel_i1
## Files changed:
1. [aten/src/ATen/functorch/BatchRulesUnaryOps.cpp](https://github.com/pytorch/pytorch/pull/99543/files#diff-a629acd680b2c8639049755617fe89f803cd1001d9936e95d7bf4e388f41c6b8)
2. [test/functorch/test_vmap.py](https://github.com/pytorch/pytorch/compare/main...SiddharthIVEX:pytorch:sid/vmap_special_bessel?expand=1#diff-17b0cd027c7b1ca042fcfe21cc86284d6e58fa46039f7e4297b22b8e02b68fea)
## How was the PR tested?
1. The unit tests under `test_vmap.py` were run and all of them passed. The output is shown below.
```
configfile: pytest.ini
plugins: hypothesis-6.71.0, anyio-2.2.0
collected 2003 items / 1981 deselected / 22 selected
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_bessel_j0_cpu_float32 PASSED [ 4%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_bessel_j1_cpu_float32 PASSED [ 9%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_bessel_y0_cpu_float32 PASSED [ 13%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_bessel_y1_cpu_float32 PASSED [ 18%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_modified_bessel_i0_cpu_float32 PASSED [ 22%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_modified_bessel_i1_cpu_float32 PASSED [ 27%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_modified_bessel_k0_cpu_float32 PASSED [ 31%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_modified_bessel_k1_cpu_float32 PASSED [ 36%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_scaled_modified_bessel_k0_cpu_float32 PASSED [ 40%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_scaled_modified_bessel_k1_cpu_float32 PASSED [ 45%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_op_has_batch_rule_special_spherical_bessel_j0_cpu_float32 PASSED [ 50%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_bessel_j0_cpu_float32 PASSED [ 54%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_bessel_j1_cpu_float32 PASSED [ 59%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_bessel_y0_cpu_float32 PASSED [ 63%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_bessel_y1_cpu_float32 PASSED [ 68%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_modified_bessel_i0_cpu_float32 PASSED [ 72%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_modified_bessel_i1_cpu_float32 PASSED [ 77%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_modified_bessel_k0_cpu_float32 PASSED [ 81%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_modified_bessel_k1_cpu_float32 PASSED [ 86%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_scaled_modified_bessel_k0_cpu_float32 PASSED [ 90%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_scaled_modified_bessel_k1_cpu_float32 PASSED [ 95%]
test/functorch/test_vmap.py::TestVmapOperatorsOpInfoCPU::test_vmap_exhaustive_special_spherical_bessel_j0_cpu_float32 PASSED [100%]
================================================================ 22 passed, 1981 deselected in 18.42s ================================================================
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/99543
Approved by: https://github.com/zou3519
