[Feature request] line endings

[tarpdalton]

Is your feature request related to a problem? Please describe.
Carriage return (CRLF) line endings cause problems on linux systems

Describe the solution you'd like
I want to see if there are any carriage returns (U+000D) in a file.
Adding it as a character in the config does not trigger gremlin tracker:

 "000D": {
   "zeroWidth": true,
    "description": "carriage return",
    "level": "error"
 }

Describe alternatives you've considered

1. Render Line Endings vscode plugin is a solution where you can identify the line endings in files.

2. You can edit .gitconfig to enforce certain line endings

#Set LF as your line ending default.
git config --global core.eol lf
#Set autocrlf to false to stop converting between windows style (CRLF) and Unix style (LF)
git config --global core.autocrlf false

3. You can edit vscode settings to enforce line endings

"files.eol": "\n",

Additional context
I'm not sure if this is possible with the vscode api, but it would be helpful.
Are there other unicode characters that gremlin tracker can't detect?

[nhoizey]

I indeed tried to add this character, but it isn't detected, or VS Code doesn't keep it "intact" on my macOS (guessing from microsoft/vscode#35797).

I don't know any other character this plugin can't detect, but there might be.

I will add the Render Line Endings plugin to the README, thanks for the information.