add hemtt support, major refactor

- no longer supports server events
- can now more easily build using hemtt
- extension vastly improved in both structure and functionality
- tested on listen server
- includes schema change

addons/main/functions/fn_getMissionInfo.sqf

@@ -0,0 +1,12 @@
+createHashMapFromArray [
+	["missionName", missionName],
+	["missionStart", ATNamespace getVariable "missionStartTime"],
+	["missionHash", ATNamespace getVariable "missionHash"],
+	["briefingName", briefingName],
+	["missionNameSource", missionNameSource],
+	["onLoadName", getMissionConfigValue ["onLoadName", ""]],
+	["author", getMissionConfigValue ["author", ""]],
+	["serverName", serverName],
+	["serverProfile", profileName],
+	["worldName", toLower worldName]
+];