Better support for RedM's RSG Core

Nothing public uses this yet, but its very similar to QBCore which makes it very for me to support

Nothing special to note, just improves the integration for future ventures into RedM

_versioncheck.lua

@@ -1,4 +1,4 @@
-function parseVersion(version)
+local function parseVersion(version)
     local parts = {}
     for num in version:gmatch("%d+") do
         table.insert(parts, tonumber(num))
@@ -6,7 +6,7 @@ function parseVersion(version)
     return parts
 end
 
-function compareVersions(current, newest)
+local function compareVersions(current, newest)
     local currentParts = parseVersion(current)
     local newestParts = parseVersion(newest)
     for i = 1, math.max(#currentParts, #newestParts) do