Improve Intrinsics

[willtebbutt]

• improve error message obtained for missing intrinsic translation with link to Rules for builtins and intrinsics #208
• improve error message for missing builtin rrule with link to Rules for builtins and intrinsics #208
• add rule for Core.Intrinsics.atomic_pointerset

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Files	Coverage Δ
src/rrules/builtins.jl	97.98% <100.00%> (+1.03%)	⬆️

[github-actions]

Performance Ratio:
Warning: results are very approximate!

┌────────────────────────────┬────────┬─────────┬─────────────┬─────────┐
│                      Label │  Tapir │  Zygote │ ReverseDiff │  Enzyme │
│                     String │ String │  String │      String │  String │
├────────────────────────────┼────────┼─────────┼─────────────┼─────────┤
│                        sum │   42.6 │   0.438 │        3.02 │   0.669 │
│                       _sum │   14.8 │   497.0 │        41.8 │   0.121 │
│                   kron_sum │   85.8 │    3.57 │       224.0 │    24.4 │
│              kron_view_sum │   95.7 │    11.4 │       243.0 │    8.33 │
│      naive_map_sin_cos_exp │   4.04 │ missing │        9.87 │    2.75 │
│            map_sin_cos_exp │   4.64 │    1.77 │        7.67 │    3.41 │
│      broadcast_sin_cos_exp │   4.34 │    2.59 │        1.66 │    3.03 │
│                 simple_mlp │   8.91 │    3.04 │        12.0 │    3.19 │
│                     gp_lml │   15.9 │    4.42 │     missing │ missing │
│ turing_broadcast_benchmark │   8.63 │ missing │        27.5 │ missing │
└────────────────────────────┴────────┴─────────┴─────────────┴─────────┘

[sunxd3]

Good stuff!