RUST: Add the standard size optimisation flags

src/rust/liblektor-rs/Cargo.toml

@@ -23,3 +23,15 @@ serde = { version = "^1", default-features = false, features = [
     "std",
     "derive",
 ] }
+
+[profile.release]
+strip = true
+debug = false
+lto = true
+opt-level = "s"
+codegen-units = 1
+
+[profile.dev]
+debug = true
+opt-level = "s"
+