Add .env to .gitignore and update dependencies

- Added .env file to .gitignore to prevent environment secrets from being tracked.
- Updated Cargo.lock to include new dependencies: mime, mime_guess, and unicase.
- Modified Cargo.toml to enable multipart feature for reqwest.
- Introduced a new PowerShell script for building and publishing the Rojo plugin.
- Removed deprecated auth_cookie.rs file and adjusted upload command for new upload methods.

src/lib.rs

@@ -7,7 +7,6 @@ pub mod cli;
 #[cfg(test)]
 mod tree_view;
 
-mod auth_cookie;
 mod change_processor;
 mod glob;
 mod json;