Improve pr template and tools ignored files

[touilleMan]

• Have you followed the guidelines for contributing?
• Have you signed the CLA?
• If this is a bugfix. Have you checked that there is a bug report open for the issue you are trying to fix on bug reports?
• If this is a new feature. Have you discussed the design on the forum?
• Have you successfully run ./runtests.sh static?
• Have you successfully run ./runtests.sh unit?

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Small PR to fix the informative message displayed while creating PR and to keep coherent the ignore pattern between tools (really annoying to black refactors zillions of files because you created your virtual env with a name different from .venv, only to get zillions of code smells from the venv because flake8 still lint .venv folder...)

[codecov-io]

Codecov Report

Merging #2191 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2191      +/-   ##
==========================================
+ Coverage   91.19%   91.21%   +0.02%     
==========================================
  Files         202      208       +6     
  Lines       12992    13160     +168     
  Branches     1922     1957      +35     
==========================================
+ Hits        11848    12004     +156     
- Misses        776      788      +12     
  Partials      368      368

Impacted Files	Coverage Δ
snapcraft/cli/parts.py	82.14% <0%> (-13.51%)	⬇️
snapcraft/internal/pluginhandler/__init__.py	90.16% <0%> (-0.92%)	⬇️
snapcraft/internal/states/__init__.py	100% <0%> (ø)	⬆️
snapcraft/internal/lifecycle/__init__.py	100% <0%> (ø)	⬆️
...internal/project_loader/inspection/_latest_step.py	100% <0%> (ø)
...aft/internal/project_loader/inspection/__init__.py	100% <0%> (ø)
...nal/project_loader/inspection/_lifecycle_status.py	100% <0%> (ø)
...ft/internal/project_loader/inspection/_provides.py	94.73% <0%> (ø)
...craft/internal/project_loader/inspection/errors.py	94.44% <0%> (ø)
snapcraft/cli/inspect.py	93.75% <0%> (ø)
... and 5 more

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[kyrofa]

While you're at it, mind adding .vscode here as well? Just got bit by this yesterday!

[touilleMan]

@kyrofa I've updated the PR ;-)

[sergiusens]

I have a questions.
is this particular to the way you set things up or is there general tooling that does this?

[touilleMan]

• .mypy_cache and .tox are standard directories
• .hg is standard directory, but this repo is a git one so this souldn't be useful (I kept it because it was already present in the pyproject.toml)
• .venv is not a standard directory (but was present in the pyproject.toml), this is anyway useful given a lot of people keep the project's virtualenv inside the repo (I personally call it venv instead of .venv but given there is no standard on this naming I guess .venv is fine)

[touilleMan]

No idea why travis is failing... is there something I can do ?

[kyrofa]

No idea why travis is failing... is there something I can do ?

No, it's been falling all over itself since yesterday, we'll all up a creek right now.