Update process.executable.build_id.htlhash brief to be more generic

[osullivandonal]

Area(s)

area:process

What's missing?

Currently the brief for process.executable.build_id.htlhash is specific to profiling. And since we have moved process.executable to its own entity in #3536 a discussion happened where it was decided to make the brief for build_id.htlhash more generic.

Describe the solution you'd like

The solution we would like would be to update the process.executable.build_id.htlhash to something like:

Build ID for executable's. This is a fully deterministic ID since it is obtained from a hash of the executable's head, tail, and length (htlhash).

This work will allow us to make process.executable.build_id.htlhash an identifying attribute for the process.executable entity.

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