Set up and integrated HEMTT for easier dev workflow. Adjusted core addon name 'logistics' to 'main'. Fixed several issues caught by HEMTT

.hemtt/launch.toml

@@ -0,0 +1,9 @@
+[default]
+# List of workshop mods to add.
+workshop = [
+    "450814997", # CBA_A3
+]
+
+presets = [ "LogisticsModDev" ]
+
+mission = "LogiDev.VR"