Adding automated weighting function

[ekdejong]

Purpose

Adds an alternative option for the weighting function in which size thresholds for "autoconversion" are computed on the fly based on set percentiles of each subdistribution.

Content

• Includes additional functionality in source code (Particle Distributions, Coalescence)
• Example ('*moving.jl')
• Unit tests
• Updates to CI & buildkite environment

---

• I have read and checked the items on the review checklist.

[trontrytel]

Hi @ekdejong :)

[sajjadazimi]

Thank you! LGTM!

[sajjadazimi]

It's good to add a couple of sentences how you compute these thresholds mathematically.

[ekdejong]

Good idea, just added

[sajjadazimi]

Do you want to add this to buildkite?

[ekdejong]

Yes, I added in latest commit. Good idea!

[codecov]

Codecov Report

❌ Patch coverage is 57.57576% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 95.35%. Comparing base (29b59bb) to head (d8dfa79).
⚠️ Report is 25 commits behind head on main.

Files with missing lines	Patch %	Lines
src/Sources/Coalescence.jl	22.22%	14 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #178      +/-   ##
==========================================
- Coverage   98.17%   95.35%   -2.83%     
==========================================
  Files           8        9       +1     
  Lines         493      538      +45     
==========================================
+ Hits          484      513      +29     
- Misses          9       25      +16     

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