Formating via stdin is being ignored due to gitignore

[zoriya]

Environments:

• CSharpier Version: 1.0.2
• Running CSharpier via: cli
• Operating System: linux
• .csharpierrc Settings: none
• .editorconfig Settings: none
• .gitignore: *

Steps to reproduce:

• Create a .gitignore with * in it (ignore all files)
• Write a foobar.cs file
• Try to format it with csharpier format < ./foobar.cs

Expected behavior:

The formated file should be printed to stdout.

Actual behavior:

Nothing is printed.

[belav]

Related - I think that when and if a stdin-filepath is provided, then it should be used to determine ignore rules.