Add subcomponent support to macros

[jonpas]

When merged this pull request will:

• Add SUBCOMPONENT support with SUBADDON and SUBGVAR family.
• Add nicer support for subcomponents/subconfigs.
• Retain easy use of parent data by not changing any other macros. Instead we will be adding more as necessary for use in sub-components. Minimal need is expected beyond the ones this PR adds.

Example subcomponent setup with this PR:

// xeh/subcomponent/script_component.hpp
// define SUBCOMPONENT and include parent component's macros
#define SUBCOMPONENT ws
#include "\x\cba\addons\xeh_ws\script_component.hpp"

// xeh/subcomponent/config.cpp
// standard with addition of
class CfgPatches {
    class SUBADDON {
        requiredAddons[] = {"cba_xeh", ...};
    };
};

ACE3 would also include SUBCOMPONENT_BEAUTIFIED which does the same for beautified names. I didn't add this here as CBA uses stringtable component names, and no subcomponent adds additional classes that would cause them to add a mission dependency.

---

Tested with:

diff --git a/addons/xeh/xeh_ws/CfgVehicles.hpp b/addons/xeh/xeh_ws/CfgVehicles.hpp
index a39cf7f6..8d0cfa7b 100644
--- a/addons/xeh/xeh_ws/CfgVehicles.hpp
+++ b/addons/xeh/xeh_ws/CfgVehicles.hpp
@@ -57,4 +57,9 @@ class CfgVehicles {
     class Truck_02_aa_base_lxWS: Truck_02_base_F {
         XEH_ENABLED;
     };
+
+    // Test SUBCOMPONENT setup
+    class CBA_Test_Unit_XEH_WS: I_SFIA_Said_lxWS {
+        dlc = "cba";
+    };
 };
diff --git a/addons/xeh/xeh_ws/config.cpp b/addons/xeh/xeh_ws/config.cpp
index e986b47a..1692da1c 100644
--- a/addons/xeh/xeh_ws/config.cpp
+++ b/addons/xeh/xeh_ws/config.cpp
@@ -3,7 +3,7 @@
 class CfgPatches {
     class SUBADDON {
         name = CSTRING(component);
-        units[] = {};
+        units[] = {"CBA_Test_Unit_XEH_WS"};
         weapons[] = {};
         requiredVersion = REQUIRED_VERSION;
         requiredAddons[] = {"cba_xeh", "data_f_lxWS"};
@@ -14,7 +14,7 @@ class CfgPatches {
         VERSION_CONFIG;
 
         // this prevents any patched class from requiring XEH
-        addonRootClass = "A3_Characters_F";
+        //addonRootClass = "A3_Characters_F";
     };
 };

addons[]=
{
	"cba_xeh_ws"
};
class AddonsMetaData
{
	class List
	{
		items=1;
		class Item0
		{
			className="cba_xeh_ws";
			name="Community Base Addons - Extended Event Handlers";
			author="CBA Team";
			url="https://www.github.com/CBATeam/CBA_A3";
		};
	};
};

[jonpas]

Changed SUBCOMPONENT to only defined new SUBADDON and SUGVAR family. 90% of the use-cases are expected to need parent component data, and not really add prefixed data in subcomponents.