Use standard install destinations instead of ddprof/ prefix

[r1viollet]

What does this PR do?

Install rules used a ddprof/ prefix on all destinations (bin, lib, include), producing non-standard paths like <prefix>/ddprof/bin/ddprof. This forced every consumer (Conan, cmake --install) to relocate files manually.

Remove the prefix and let CMAKE_INSTALL_PREFIX control the layout. Update setup_env.sh to set the prefix to ../deliverables/ddprof so the release tarball structure stays the same.

Motivation

See original PR here.

Additional Notes

NA

How to test the change?

Requires downstream PR in ddprof-build.
Custom pipeline is here

[r1viollet]

I am not sure why the build status is not taking into account the custom build pipeline 🤔

[pr-commenter]

Benchmark results for collatz

Parameters

	Baseline	Candidate
config	baseline	candidate
profiler-version	ddprof 0.23.0+f1638cda.103549242	ddprof 0.23.0+a1fcc0f9.103564316

Summary

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1 metrics, 0 unstable metrics.

See unchanged results

scenario	Δ mean execution_time
scenario:ddprof -S bench-collatz --preset cpu_only collatz_runner.sh	same

[pr-commenter]

Benchmark results for BadBoggleSolver_run

Parameters

	Baseline	Candidate
config	baseline	candidate
profiler-version	ddprof 0.23.0+f1638cda.103549242	ddprof 0.23.0+a1fcc0f9.103564316

Summary

Found 0 performance improvements and 0 performance regressions! Performance is the same for 1 metrics, 0 unstable metrics.

See unchanged results

scenario	Δ mean execution_time
scenario:ddprof -S bench-bad-boggle-solver BadBoggleSolver_run work 1000	unsure [+3.276ms; +14.567ms] or [+0.164%; +0.731%]