feat(imports/logger): add definable dataset for fivemanage logging (#45)

imports/logger/server.lua

@@ -94,6 +94,7 @@ end
 
 if service == 'fivemanage' then
     local key = GetConvar('fivemanage:key', '')
+    local dataset = GetConvar('fivemanage:dataset', '')
 
     if key ~= '' then
         local endpoint = 'https://api.fivemanage.com/api/logs/batch'
@@ -101,9 +102,13 @@ if service == 'fivemanage' then
         local headers = {
             ['Content-Type'] = 'application/json',
             ['Authorization'] = key,
-            ['User-Agent'] = 'ox_lib'
+            ['User-Agent'] = 'ox_lib',
         }
 
+        if dataset ~= "" then
+            headers['X-Fivemanage-Dataset'] = dataset
+        end
+
         function lib.logger(source, event, message, ...)
             if not buffer then
                 buffer = {}