Add lint rule to require new line at end of file

[mtrezza]

New Feature / Enhancement Checklist

• I am not disclosing a vulnerability.
• I am not just asking a question.
• I have searched through existing issues.

Current Limitation

Currently, lint rules not require an empty new line at the end of a file.

• This requirement should be consistent across repos, we currently require it in the the Parse Android SDK.

• There is a good argument for adding the rule:

  Trailing newlines in non-empty files are a common UNIX idiom. Benefits of trailing newlines include the ability to concatenate or append to files as well as output files to the terminal without interfering with shell prompts.

Feature / Enhancement Description

Add lint rule eol-last.

Example Use Case

n/a

Alternatives / Workarounds

n/a

[parse-github-assistant]

Thanks for opening this issue!

• 🎉 We are excited about your ideas for improvement!

[mtrezza]

Closing via #1874