`.direnv` directory should not be packaged (#2464)

If somebody uses direnv tool, the `.direnv` directory is created,
that contains some data and especially some symlinks.
Symlinks makes `vsce` to fail zipping the built VSIX.

Generally `.direnv` should not be added to the resulting VSIX,
therefore I add it to .vscodeignore.

.vscodeignore

@@ -31,6 +31,7 @@ cline_docs/**
 coverage/**
 locales/**
 benchmark/**
+.direnv/**
 
 # Ignore all webview-ui files except the build directory (https://github.com/microsoft/vscode-webview-ui-toolkit-samples/blob/main/frameworks/hello-world-react-cra/.vscodeignore)
 webview-ui/src/**