A tutorial to explain use of Rust-Aya for writing tracepoint programs

[nsengupta]

My intention is to fill in the missing portions (at least, some of it) in aya-book's tutorials.

Here is an attempt to do that for tracepoints.

I presume, this will be useful for all aspiring Rust-Aya programmers.

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[nsengupta]

@vadorovsky I have been away for quite some time. Apologies and thanks for your observations.

I have merged the changes. Please check in your own time.

[vadorovsky]

@nsengupta Sorry for even later reaction from my side! Could you rebase your PR? You will likely get some markdownlint errors to fix.

For the next time, could you also submit pull requests from other branches than main? When a pull request is based on a custom branch, "Update branch" functionality of GitHub works well and maintainers of the main project are able to push to that custom branch as well. In that case, we could sort out the rebase without bothering you. 🙂