refactor: Extract shared MCP Stdio NDJSON parsing loop into mcp-stdio library

nvim-core/Cargo.toml

@@ -14,4 +14,5 @@ tracing-appender = "0.2.5"
 tracing-subscriber = "0.3.23"
 dirs = "7.0.0"
 rmcp = { version = "3.4.0", features = ["server"] }
+mcp-stdio = { version = "0.1.0", path = "../mcp-stdio" }