feat(dev): ignore local Neovim config files

[saiefscale]

Add .nvim.lua to the gitignore to give Neovim developers a way to configure their editor settings for this repo.

Greptile Summary

Adds repository-wide Git ignore handling for Neovim’s local .nvim.lua configuration file.

• Adds a Neovim section to .gitignore.
• Prevents local .nvim.lua editor settings from being committed accidentally.

Confidence Score: 5/5

The PR appears safe to merge with no actionable issues identified.

The new ignore entry consistently excludes the intended local Neovim configuration, and no existing tracked files, fixtures, or repository conventions conflict with it.

Important Files Changed

Filename	Overview
.gitignore	Adds the intended Neovim configuration ignore pattern without affecting tracked repository files.

_{Reviews (1): Last reviewed commit: "feat(dev): ignore local Neovim config fi..." | Re-trigger Greptile}