Introduce SetFunction for profiles

[dmathieu]

Description

This is part of #13106
It introduces a new SetFunction method, which allows setting a line's function based on a specific dictionary.

Related: #13197

[codecov]

Codecov Report

Attention: Patch coverage is 65.51724% with 10 lines in your changes missing coverage. Please review.

Project coverage is 91.47%. Comparing base (be09659) to head (baf5b35).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
pdata/pprofile/functions.go	58.33%	7 Missing and 3 partials ⚠️

❌ Your patch status has failed because the patch coverage (65.51%) is below the target coverage (95.00%). You can increase the patch coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #13222      +/-   ##
==========================================
- Coverage   91.48%   91.47%   -0.02%     
==========================================
  Files         529      531       +2     
  Lines       29508    29537      +29     
==========================================
+ Hits        26996    27018      +22     
- Misses       1985     1990       +5     
- Partials      527      529       +2     

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[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[dmathieu]

Bump for review. This is needed to bring back batching support for profiles.

[mx-psi]

Bump for review. This is needed to bring back batching support for profiles.

Let's resolve the discussion over at #13225 first

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[dmathieu]

This is not stale.

[mx-psi]

LGTM, same as with the SetString PR, let's discuss the naming over at #13440