feat(Core/Commands): Deserter command (BG/Instance) (#1786)

* feat(Core/Commands): Deserter command (BG/Instance)

- Adding .deserter command
- Subcommands ;
* instance add
* instance remove
* bg add
* bg remove

Time is in seconds, example usage:
.deserter instance add 3600 (One hour)
.deserter bg add 3600 (One hour)

* Update cs_deserter.cpp

* Update cs_deserter.cpp

another try

* Update cs_deserter.cpp

again

* Update cs_deserter.cpp

sick of this

* Update cs_deserter.cpp

* Update cs_deserter.cpp

Remove some lines

data/sql/updates/pending_db_world/rev_1556618006402506300.sql

@@ -0,0 +1,13 @@
+INSERT INTO `version_db_world` (`sql_rev`) VALUES ('1556618006402506300');
+
+DELETE FROM `command` WHERE `name` IN
+("deserter instance add",
+"deserter instance remove",
+"deserter bg add",
+"deserter bg remove");
+
+ INSERT INTO `command` (`name`, `security`, `help`) VALUES
+("deserter instance add", 3, "Syntax: .deserter instance add $time \n\n Adds the instance deserter debuff to your target with $time duration."),
+("deserter instance remove", 3, "Syntax: .deserter instance remove \n\n Removes the instance deserter debuff from your target."),
+("deserter bg add", 3, "Syntax: .deserter bg add $time \n\n Adds the bg deserter debuff to your target with $time duration."),
+("deserter bg remove", 3, "Syntax: .deserter bg remove \n\n Removes the bg deserter debuff from your target.");