Add build and run steps for CLI test

TODO.md

@@ -0,0 +1 @@
+- 连接类型，支持tcp，stdin/out，socket（socket优先支持）

build.zig

@@ -41,4 +41,31 @@ pub fn build(b: *std.Build) void {
     msgpack_rpc_unit_tests.root_module.addImport("msgpack_rpc", msgpack_rpc);
     const run_msgpack_rpc_tests = b.addRunArtifact(msgpack_rpc_unit_tests);
     test_step.dependOn(&run_msgpack_rpc_tests.step);
+
+    {
+        //// build test cli
+        const build_step = b.step("build_cli", "build cli test");
+        const exe = b.addExecutable(.{
+            .name = "msgpack_rpc",
+            .root_source_file = .{ .path = "src/main.zig" },
+            .target = target,
+            .optimize = optimize,
+        });
+
+        exe.root_module.addImport("msgpack_rpc", msgpack_rpc);
+
+        const install = b.addInstallArtifact(exe, .{});
+
+        build_step.dependOn(&install.step);
+
+        const run_exe = b.addRunArtifact(exe);
+
+        run_exe.step.dependOn(&install.step);
+
+        // 指定一个 step 为 run
+        const run_step = b.step("run_cli", "Run the cli");
+
+        // 指定该 step 依赖于 run_exe，即实际的运行
+        run_step.dependOn(&run_exe.step);
+    }
 }

src/main.zig

@@ -0,0 +1,6 @@
+const std = @import("std");
+const msgpack_rpc = @import("msgpack_rpc");
+
+pub fn main() !void {
+    std.debug.print("hello, world", .{});
+}

src/msgpack_rpc.zig

@@ -16,4 +16,3 @@ const Header = struct {
     t: MessageType,
     id: ?u32,
 };
-