feat(direnv-p10k): Add a new plugin for direnv which specifically disables the precmd_functions hook for powerlevel10k theme users to avoid the instant prompt warning when starting a shell in a directory where a .envrc is both located and `direnv allow`ed

Signed-off-by: Thomas D. Spear <thomas.spear@wcgclinical.com>

plugins/direnv-p10k/README.md

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+# direnv plugin
+
+This plugin creates the [Direnv](https://direnv.net/) hook.
+
+This hook is tweaked to prevent issues with the powerlevel10k theme's instant prompt feature by not adding the direnv hook to precmd_functions
+
+To use it, add `direnv-p10k` to the plugins array in your zshrc file:
+
+```zsh
+plugins=(... direnv-p10k)
+```
+
+## Requirements
+
+In order to make this work, you will need to have direnv installed.
+
+More info on the usage and install: https://github.com/direnv/direnv

plugins/direnv-p10k/direnv-p10k.plugin.zsh

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+# If direnv is not found, don't continue and print a warning
+if (( ! $+commands[direnv] )); then
+  echo "Warning: direnv not found. Please install direnv and ensure it's in your PATH before using this plugin."
+  return
+fi
+
+_direnv_hook() {
+  trap -- '' SIGINT;
+  eval "$(direnv export zsh)";
+  trap - SIGINT;
+}
+typeset -ag chpwd_functions;
+if [[ -z "${chpwd_functions[(r)_direnv_hook]+1}" ]]; then
+  chpwd_functions=( _direnv_hook ${chpwd_functions[@]} )
+fi