feat(config): Add config loading/saving

Also adding a first time run wizard, which creates the config if it does
not exist yet.

src/main.rs

@@ -0,0 +1,58 @@
+mod config;
+
+use log::*;
+use clap::Parser;
+use std::path::PathBuf;
+
+#[derive(Parser, Debug)]
+#[command(author, version, about, long_about = None)]
+struct Args {
+    /// Quiet mode
+    #[arg(short, long)]
+    quiet: bool,
+
+    /// Verbosity
+    #[arg(short, long, action = clap::ArgAction::Count)]
+    verbose: u8,
+
+    /// First run mode
+    #[arg(short, long)]
+    first_run: bool,
+
+    /// Custom config file
+    #[arg(short, long, value_name = "FILE")]
+    config: Option<PathBuf>,
+
+    /// Path to look for media in
+    path: Option<PathBuf>,
+}
+
+fn main() {
+    let args = Args::parse();
+
+    stderrlog::new()
+        .module(module_path!())
+        .quiet(args.quiet)
+        .verbosity(args.verbose as usize + 1)
+        .init()
+        .unwrap();
+
+    trace!("trace message");
+    debug!("debug message");
+    info!("info message");
+    warn!("warn message");
+    error!("error message");
+
+    let config_path = if args.config.is_none() {
+        PathBuf::from(std::env::var("HOME").unwrap()).join(".plex-media-ingest").join("config.json")
+    } else {
+        args.config.unwrap()
+    };
+
+    info!("Loading config from \"{}\"", config_path.to_str().unwrap());
+
+    let cfg = config::load(&config_path).unwrap();
+
+    info!("Found config: {:#?}", cfg);
+
+}