fix: add cataclysm-bn-tiles.exe.manifest to .gitignore

[chaosvolt]

Checklist

Required

• I wrote the PR title in conventional commit format.
• I ran the code formatter.
• I linked any relevant issues using github keyword syntax so it can be closed automatically.
• I have committed my changes to new branch that isn't main so it won't cause conflict when updating main branch later.

Optional

Purpose of change

This fixes the issue where, due to renaming what the exe is when compiled, compiling in VS2019 would cause file changes that should be ignored in gitingore instead.

Describe the solution

Added the new manifest file to .gitignore.

Describe alternatives you've considered

screm

Testing

Saw that the file change it keeps trying to put in my PRs is automatically absent from listed file changes.

Additional context