Update to use clap.

Structopt is deprecated.
Also removed some unused dependencies.

src/main.rs

@@ -1,30 +1,30 @@
 use anyhow::Result;
+use clap::Parser;
 use std::process::{Command, Stdio};
-use structopt::StructOpt;
 
 pub mod gui;
 pub mod tui;
 /// Command line interface IDE with full GUI and headless modes.
 /// If no flags are provided, the GUI editor is launched in a separate process.
 /// If no path is provided, the current directory is used.
-#[derive(StructOpt, Debug)]
+#[derive(Parser, Debug)]
 #[structopt(name = "clide", verbatim_doc_comment)]
 struct Cli {
     /// The root directory for the project to open with the clide editor.
-    #[structopt(parse(from_os_str))]
+    #[arg(value_parser = clap::value_parser!(std::path::PathBuf))]
     pub path: Option<std::path::PathBuf>,
 
     /// Run clide in headless mode.
-    #[structopt(name = "tui", short, long)]
+    #[arg(value_name = "tui", short, long)]
     pub tui: bool,
 
     /// Run the clide GUI in the current process, blocking the terminal and showing all output streams.
-    #[structopt(name = "gui", short, long)]
+    #[arg(value_name = "gui", short, long)]
     pub gui: bool,
 }
 
 fn main() -> Result<()> {
-    let args = Cli::from_args();
+    let args = Cli::parse();
 
     let root_path = match args.path {
         // If the CLI was provided a directory, convert it to absolute.