Fix missing end of file chars

[ashahba]

Description

This PR fixes missing end of file chars across the repo.
This is the command I used to fix them all in one shot:

git ls-files -z | while IFS= read -rd '' f; do if file --mime-encoding "$f" | grep -qv binary; then tail -c1 < "$f" | read -r _ || echo >> "$f"; fi; done

Issues

Currently the check for missing end of file's is failing the linter tests but we have many files across the repo with that same issue which needs fix anyway.

Type of change

List the type of change like below. Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds new functionality)
• Breaking change (fix or feature that would break existing design and interface)
• Others (enhancement, documentation, validation, etc.)

Dependencies

List the newly introduced 3rd party dependency if exists.: None

Tests

Describe the tests that you ran to verify your changes.
Lint tests should pass without any issues since the files in the PR was touched.

[Spycsh]

Just curious whether we can have any automatic pre-CI to fix the missing eof for future commits