Support AppVeyor

[codecov]

Support AppVeyor

[felixfbecker]

I am using the bash uploader successfully in multiple projects:

https://github.com/felixfbecker/vscode-php-debug/blob/2afa122eb27f1dcbd20d8657c0d78ad0aed0ff50/appveyor.yml#L24-L29

https://github.com/sourcegraph/javascript-typescript-langserver/blob/a34ac0bde47e7219481e2d20bc8b3b5ea816dddc/appveyor.yml#L22-L27

https://github.com/sequelize/sequelize/blob/3f5927f5bb47db85f5e0401d5a876f652fef1cd3/appveyor.yml#L35-L41

MinGW Unix tools just have to be added to PATH so that find uses the Unix util and not the DOS command.

Imo this solution is better than requiring installation with Python.

[jayvdb]

So bash is in the PATH, but that is not sufficient because find needs to be added to the front of the PATH?

The bash script should be able to detect AppVeyor and amend the PATH for its own process only.

Then AppVeyor can be 'supported' in https://github.com/codecov/codecov-bash#ci-providers

[felixfbecker]

Uhm, I don't know if bash is in the PATH by default, but all the unix tools (including bash) that CodeCov uses are ported to Windows in MSYS which is available on AppVeyor in C:\msys64.

[jayvdb]

#138 helps with this

[drazisil]

There are a couple open issues and PRs, but Appveyor does work. Closing this issue in favor of those.