[web] Add the ability to parse arguments

(don't actually do anything with them yet)

@@ -26,3 +29,3 @@
 /// `UserPreferences` struct shares a lifetime with the settings it was created with.
 #[non_exhaustive]
-#[derive(Debug, PartialEq, Eq)]
+#[derive(Clone, Debug, PartialEq, Eq, serde::Serialize, serde::Deserialize)]

@@ -0,0 +54,4 @@
+				   short = 'c'))]
+	/// path to the config file (generated if needed).  Defaults to
+	/// /etc/pronouns_today.yml
+	pub config: String,

@@ -0,0 +63,4 @@
+
+	#[argh(option, short = 'p')]
+	/// the port to listen on
+	pub port: Option<u16>,

@@ -0,0 +88,4 @@
+			match File::open(&self.config) {
+				Ok(raw_cfg) => {
+					serde_yaml::from_reader(raw_cfg)
+						.map_err(ConfigError::MalformedConfig)

@@ -0,0 +120,4 @@
+	pub instance_settings: InstanceSettings,
+
+	/// The port for the server to bind to.  Defaults to 1312
+	pub port: u16,

@@ -145,0 +167,4 @@
+					println!("A config file has been generated at {}!  Please check it out
+							 and modify it to your liking, and then run this command
+							 again", path);
+					exit(0);