Dreamview: split main.cc from dreamview's backend library

modules/dreamview/BUILD

 load("@rules_cc//cc:defs.bzl", "cc_binary")
+load("//tools/platform:build_defs.bzl", "copts_if_teleop")
 load("//tools:cpplint.bzl", "cpplint")
 
 package(default_visibility = ["//visibility:public"])
 
+DREAMVIEW_COPTS = ['-DMODULE_NAME=\\"dreamview\\"']
+
 filegroup(
     name = "frontend",
     srcs = glob(["frontend/dist/**/*"]),
@@ -10,6 +13,8 @@ filegroup(
 
 cc_binary(
     name = "dreamview",
+    srcs = ["main.cc"],
+    copts = DREAMVIEW_COPTS + copts_if_teleop(),
     data = [
         ":frontend",
     ],

modules/dreamview/backend/BUILD

-load("//tools:cpplint.bzl", "cpplint")
 load("@rules_cc//cc:defs.bzl", "cc_library")
 load("//tools/platform:build_defs.bzl", "copts_if_teleop", "if_teleop")
+load("//tools:cpplint.bzl", "cpplint")
 
 package(default_visibility = ["//visibility:public"])
 
+DREAMVIEW_COPTS = ['-DMODULE_NAME=\\"dreamview\\"']
+
 cc_library(
     name = "backend",
-    srcs = [
-        "dreamview.cc",
-        "main.cc",
-    ],
+    srcs = ["dreamview.cc"],
     hdrs = ["dreamview.h"],
-    copts = ['-DMODULE_NAME=\\"dreamview\\"'] + copts_if_teleop(),
+    copts = DREAMVIEW_COPTS + copts_if_teleop(),
     deps = [
         "//modules/common/configs:vehicle_config_helper",
         "//modules/common/status",

modules/dreamview/backend/main.cc → modules/dreamview/main.cc

@@ -20,7 +20,7 @@
 
 int main(int argc, char *argv[]) {
   google::ParseCommandLineFlags(&argc, &argv, true);
-  // add by caros for dv performance improve
+  // Added by caros to improve dv performance
   apollo::cyber::GlobalData::Instance()->SetProcessGroup("dreamview_sched");
   apollo::cyber::Init(argv[0]);