Add Emulation domain

Signed-off-by: Francis Bouvier <francis@lightpanda.io>

src/cdp/emulation.zig

@@ -0,0 +1,34 @@
+const std = @import("std");
+
+const server = @import("../server.zig");
+const Ctx = server.Cmd;
+const result = @import("cdp.zig").result;
+const getParams = @import("cdp.zig").getParams;
+const stringify = @import("cdp.zig").stringify;
+
+const EmulationMethods = enum {
+    setEmulatedMedia,
+};
+
+pub fn emulation(
+    alloc: std.mem.Allocator,
+    id: u64,
+    action: []const u8,
+    scanner: *std.json.Scanner,
+    ctx: *Ctx,
+) ![]const u8 {
+    const method = std.meta.stringToEnum(EmulationMethods, action) orelse
+        return error.UnknownMethod;
+    return switch (method) {
+        .setEmulatedMedia => setEmulatedMedia(alloc, id, scanner, ctx),
+    };
+}
+
+fn setEmulatedMedia(
+    alloc: std.mem.Allocator,
+    id: u64,
+    _: *std.json.Scanner,
+    _: *Ctx,
+) ![]const u8 {
+    return result(alloc, id, null, null);
+}