✨ Override moban file in fs url format

[chfw]

Before raising the PR, here is a check list:

• have you written unit tests for your code changes?
• have you updated the change log?
• can someone else understand your changes without your explanation?
• are you proud of your code changes?
• please add your name and github link to contributors.rst in alphabetical order.

[codecov-io]

Codecov Report

Merging #347 into dev will increase coverage by 0.22%.
The diff coverage is 92.85%.

@@            Coverage Diff             @@
##              dev     #347      +/-   ##
==========================================
+ Coverage   96.02%   96.24%   +0.22%     
==========================================
  Files          51       55       +4     
  Lines        2665     2795     +130     
==========================================
+ Hits         2559     2690     +131     
+ Misses        106      105       -1

Impacted Files	Coverage Δ
tests/data_loaders/test_json_loader.py	100% <100%> (ø)
tests/data_loaders/test_yaml_loader.py	100% <100%> (ø)
moban/main.py	99.28% <100%> (+0.04%)	⬆️
tests/data_loaders/test_overrides.py	100% <100%> (ø)
moban/core/data_loader.py	97.18% <77.77%> (+1.94%)	⬆️
tests/data_loaders/test_merge_dict.py	100% <0%> (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 4563c01...a1d060f. Read the comment docs.