Add structopt

Co-authored-by: Elias Schriefer

src/main.rs

@@ -1,3 +1,15 @@
-fn main() {
-    println!("Hello, world!");
+use structopt::StructOpt;
+use std::path::PathBuf;
+
+#[derive(Debug, StructOpt)]
+struct Options {
+    #[structopt(short, long, default_value = "/etc/noise-server/config.toml")]
+    config: PathBuf,
+
+    #[structopt(short, long, default_value = "/var/lib/noise-server/noise-server.sqlite")]
+    database_path: PathBuf,
+}
+
+fn main() {
+    let options = Options::from_args();
 }