Add i18n feature

[kochizufan]

• Add python-18n and pyyaml to dependencies
• Wrap all strings by "i18n.t" function
• Add locale resources for English and Japanese
• Items in Japanese resources are partially translated

NOTE:

• This change doesn't include "Language switching" function. Selected locale is hard-coded. I have no idea how to realize "Language switching", so I want to ask someone's help...
• I'm not good translator and not medical expert, so I will ask someone who is good at translation and medical knowledge to finish Japanese translation later. So I will submit another PR to finish Japanese translation later.

[kochizufan]

Test failed..

==================================== ERRORS ====================================
_________________________ ERROR collecting test_app.py _________________________
ImportError while importing test module '/home/runner/work/chime/chime/test_app.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
test_app.py:1: in
import chime.app
app.py:7: in
import i18n
E ModuleNotFoundError: No module named 'i18n'

Does someone know how to avoid this error?
Adding "python-i18n" to Pipfile is not enough for testing?

[Edited] Solved by adding python-i18n to resources.txt