add factory web frontend (#77)

### Description

This PR adds a web frontend for factory.
Please let me know if you think the directory names or API endpoints should be changed.
For example, I personally think there are better names than rc_factory_api, and there may be better API names than webui...

### Game

Robocraft

### Please confirm

- [x] I am the legal owner or represent the owner of all work submitted
- [x] I consent to my submission being added to this FOSS project
- [x] This PR used LLMs to generate some or all of the code changes

Reviewed-on: https://git.ngram.ca/OpenJam/rc-servers/pulls/77
Reviewed-by: NGnius <ngniusness@gmail.com>
Co-authored-by: MaxSignal <kastera58@gmail.com>
Co-committed-by: MaxSignal <kastera58@gmail.com>

rc_factory_web/src/cli.rs

@@ -0,0 +1,23 @@
+use clap::Parser;
+
+#[derive(Parser, Debug, Clone)]
+#[command(version, about, long_about = None)]
+pub struct CliArgs {
+    /// TCP port on which to accept connections
+    #[arg(short, long, default_value_t = 8012)]
+    pub port: u16,
+
+    /// IP Address on which to accept connections
+    #[arg(long, default_value_t = {"127.0.0.1".to_string()})]
+    pub ip: String,
+
+    /// Assets root
+    #[arg(long, default_value_t = {"../assets/robocraft".to_string()})]
+    pub assets: String,
+}
+
+impl CliArgs {
+    pub fn get() -> Self {
+        Self::parse()
+    }
+}