init: Add task_profiles init command

Introduce new command to allow setting task profiles from inside .rc
script. This is to replace usage of writepid when a service is trying
to join a cgroup. Usage example from a .rc file:

service surfaceflinger /system/bin/surfaceflinger
    task_profiles HighPerformance

Bug: 155419956
Test: change .rc file and confirm task profile is applied
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I0add9c3b363a7cb1ea89778780896cae1c8a303c
diff --git a/init/service_parser.cpp b/init/service_parser.cpp
index 560f693..1444258 100644
--- a/init/service_parser.cpp
+++ b/init/service_parser.cpp
@@ -360,6 +360,12 @@
     return Error() << "Invalid shutdown option";
 }
 
+Result<void> ServiceParser::ParseTaskProfiles(std::vector<std::string>&& args) {
+    args.erase(args.begin());
+    service_->task_profiles_ = std::move(args);
+    return {};
+}
+
 Result<void> ServiceParser::ParseTimeoutPeriod(std::vector<std::string>&& args) {
     int period;
     if (!ParseInt(args[1], &period, 1)) {
@@ -529,6 +535,7 @@
         {"sigstop",                 {0,     0,    &ServiceParser::ParseSigstop}},
         {"socket",                  {3,     6,    &ServiceParser::ParseSocket}},
         {"stdio_to_kmsg",           {0,     0,    &ServiceParser::ParseStdioToKmsg}},
+        {"task_profiles",           {1,     kMax, &ServiceParser::ParseTaskProfiles}},
         {"timeout_period",          {1,     1,    &ServiceParser::ParseTimeoutPeriod}},
         {"updatable",               {0,     0,    &ServiceParser::ParseUpdatable}},
         {"user",                    {1,     1,    &ServiceParser::ParseUser}},