Fix #23 -- implement output message template format

[amureki]

Inspired by pylint:
https://pylint.pycqa.org/en/latest/user_guide/usage/output.html#custom-message-formats

Todo if accepted:

• tests
• documentation of all template options

[lgtm-com]

This pull request introduces 1 alert when merging 1b32029 into 39dd830 - view on LGTM.com

new alerts:

• 1 for Unused import

[codecov]

Codecov Report

Base: 100.00% // Head: 100.00% // No change to project coverage 👍

Coverage data is based on head (4f88484) compared to base (638f534).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #29   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            4         4           
  Lines          125       123    -2     
=========================================
- Hits           125       123    -2     

Impacted Files	Coverage Δ
relint/__main__.py	100.00% <100.00%> (ø)
relint/parse.py	100.00% <100.00%> (ø)

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[codingjoe]

@amureki would you care to review this? I'd like to release this in the next major version (v2).

[codingjoe]

@amureki almost 😉

[amureki]

@amureki almost 😉

I'll finish it later today, haha 😁

[amureki]

@codingjoe not sure I follow the test rule here:

relint/tests/fixtures/.relint.yml

Lines 7 to 10 in 638f534

	- name: Not Unicode
	pattern: '[tT][oO][dD][oO]'
	filePattern: .*
	error: false

it mentions unicode, but rule itself copies pattern from "No ToDo" rule above...

[codingjoe]

@codingjoe not sure I follow the test rule here:

relint/tests/fixtures/.relint.yml

Lines 7 to 10 in 638f534

	- name: Not Unicode
	pattern: '[tT][oO][dD][oO]'
	filePattern: .*
	error: false

it mentions unicode, but rule itself copies pattern from "No ToDo" rule above...

My bad, you can just remove the pattern. It's not needed.

[codingjoe]

🎉