Mark arbitrary function as tasks with @pytask.mark.task.

[tobiasraabe]

Closes #175.

[codecov]

Codecov Report

Merging #200 (9461ccb) into main (104ece6) will increase coverage by 0.06%.
The diff coverage is 98.78%.

@@            Coverage Diff             @@
##             main     #200      +/-   ##
==========================================
+ Coverage   92.78%   92.84%   +0.06%     
==========================================
  Files          71       74       +3     
  Lines        6732     6806      +74     
==========================================
+ Hits         6246     6319      +73     
- Misses        486      487       +1     

Flag	Coverage Δ
end_to_end	78.69% <59.75%> (-0.26%)	⬇️
integration	41.80% <56.09%> (+0.11%)	⬆️
unit	70.02% <98.78%> (+1.32%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/_pytask/task_utils.py	93.33% <93.33%> (ø)
src/_pytask/cli.py	98.63% <100.00%> (+0.03%)	⬆️
src/_pytask/mark/structures.py	92.04% <100.00%> (ø)
src/_pytask/mark_utils.py	88.88% <100.00%> (+5.55%)	⬆️
src/_pytask/parametrize.py	100.00% <100.00%> (ø)
src/_pytask/task.py	100.00% <100.00%> (ø)
tests/test_task.py	100.00% <100.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 104ece6...9461ccb. Read the comment docs.