Make compact macro report call site lines stacktraces

[oxinabox]

Right now, if there is a exception thrown in code that uses @compact to declare the custom layer,
the stack trace just reports a line in

  [8] (::Lux.CompactLuxLayer{…})(x::Tuple{…}, ps::@NamedTuple{…}, st::@NamedTuple{…})
    @ Lux ~/.julia/packages/Lux/Zukby/src/helpers/compact.jl:364

It would be much more useful if it reported which line in the user code caused the error.

There are various methods that can be used for this.
Though none nicely documented.
Basically need to filter the wrong info out of the line number nodes in the AST, and insert the __source__

Examples:

• https://github.com/JuliaDiff/ChainRulesCore.jl/blob/2aad1172e8c7822e8e0a28545450438a73624e35/src/tangent_types/thunks.jl#L145-L147
• https://github.com/JuliaDiff/ChainRulesCore.jl/blob/2aad1172e8c7822e8e0a28545450438a73624e35/src/rule_definition_tools.jl#L184
• https://github.com/JuliaLogging/LoggingExtras.jl/blob/ed2c622602637d5b9abdb41d46b189dff3468a6f/src/verbosity.jl#L1-L11

I am note sure if these suffice for something that is multiline
but we have the tech to do at least a little better than we do now