Refactor/instruction trace dump

[procdump]

The aim of this PR is to respect the VM_TRACE_DIR variable and hence dump the instruction trace in the provided directory.

I've managed to wrap up a working setup with this code on top of mollusk-svm 0.6.1. I've only had to silence the lack of the trace method of the ContextObject trait by bringing a dummy back.

Please have a look. I'm not pretty sure if this is the right place for the AsBytes trait. I'm also unsure about the possibility of passing an error back if writing of the files fails due to some reason.

[Lichtso]

I think it would be beneficial to do this (exporting the traces to files via environment variables) on the SVM side (see discussion anza-xyz/agave#7709 (comment)) as that would allow us to further join it with the program-id across CPIs, which we don't know at this low level here.

[procdump]

I think it would be beneficial to do this (exporting the traces to files via environment variables) on the SVM side (see discussion anza-xyz/agave#7709 (comment)) as that would allow us to further join it with the program-id across CPIs, which we don't know at this low level here.

Right, we're on the same page. Is this the place you're referring to or I'm missing some context and there's a better one?

[Lichtso]

Is this the place you're referring to or I'm missing some context and there's a better one?

I will figure that out when I update the SBPF dependency in the monorepo to adopt #71. All places that interact with
https://github.com/anza-xyz/agave/blob/70ad4f09f9f34a0ba519410caf46015291956a64/program-runtime/src/invoke_context.rs#L205 need to be refactored.

[procdump]

Since anza-xyz/agave#8285 got merged I'm closing this PR.