Add language scaffolding: manifest, gitignore, editorconfig

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013kj58Jugkic783b8ZrtTVZ

.editorconfig

@@ -0,0 +1,17 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+insert_final_newline = true
+trim_trailing_whitespace = true
+indent_style = space
+
+[*.{rs,toml}]
+indent_size = 4
+
+[*.{py,dart,json,yaml,yml}]
+indent_size = 2
+
+[*.md]
+trim_trailing_whitespace = false

.gitignore

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+/target
+*.pdb
+
+# Cargo.lock IS committed: these crates build binaries, not libraries.

Cargo.toml

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+[package]
+name = "svc-gw"
+version = "0.1.0"
+edition = "2021"
+description = "Telemetry gateway: aggregation and the app boundary"
+publish = false
+
+[dependencies]

rust-toolchain.toml

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+[toolchain]
+channel = "stable"

src/main.rs

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+fn main() {
+    println!("{} is not implemented yet", env!("CARGO_PKG_NAME"));
+}