Improve code style and documentation

[Defelo]

No description provided.

[codecov]

Codecov Report

Merging #69 (8255994) into develop (7e651b8) will increase coverage by 1.5%.
The diff coverage is 93.8%.

Additional details and impacted files

Impacted Files	Coverage Δ
src/api/programs.rs	94.5% <ø> (ø)
src/lib.rs	100.0% <ø> (ø)
src/main.rs	86.1% <73.9%> (-3.6%)	⬇️
src/program/prune.rs	81.6% <81.6%> (ø)
src/environments.rs	87.2% <85.0%> (+28.4%)	⬆️
src/program/mod.rs	96.4% <96.4%> (ø)
src/sandbox.rs	93.4% <96.8%> (+2.2%)	⬆️
src/program/build.rs	98.6% <98.6%> (ø)
src/program/run.rs	98.8% <98.8%> (ø)
client/src/schemas/environments.rs	94.6% <100.0%> (+3.7%)	⬆️
... and 3 more