Get rid of all transport types and settle on Protobuf (#25)

* Get rid of all transport types and settle on Protobuf

hope i don't regret this

* Update Cargo.toml

* Update agent.py

crates/djls-ipc/build.rs

@@ -0,0 +1,38 @@
+use std::fs;
+use std::path::{Path, PathBuf};
+
+struct Version(&'static str);
+
+impl Version {
+    fn collect_protos(&self, proto_root: &Path) -> Vec<PathBuf> {
+        fs::read_dir(proto_root.join(self.0))
+            .unwrap()
+            .filter_map(Result::ok)
+            .filter(|entry| entry.path().extension().and_then(|s| s.to_str()) == Some("proto"))
+            .map(|entry| entry.path())
+            .collect()
+    }
+}
+
+const VERSIONS: &[Version] = &[Version("v1")];
+
+fn main() {
+    let manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
+    let workspace_root = manifest_dir.parent().unwrap().parent().unwrap();
+    let proto_dir = workspace_root.join("proto");
+
+    let mut protos = Vec::new();
+    for version in VERSIONS {
+        protos.extend(version.collect_protos(&proto_dir));
+    }
+
+    prost_build::Config::new()
+        .compile_protos(
+            &protos
+                .iter()
+                .map(|p| p.to_str().unwrap())
+                .collect::<Vec<_>>(),
+            &[proto_dir],
+        )
+        .unwrap();
+}