Buildable (#36)

- Buildable missions now working. 
- FARPS and BLUESAM zones are now buildable. 
- Secondary Logistics missions are created as buildables become available. 
- Logistic missions can be "marked" with a MAP marker. 
- Supplies can only be picked up in a SUPPLYHUB zone. 
- SUPPLYHUB zones are active once their parents are active. A supplyhub parent can be oneof: FARP, AIRBASE, STAGE. 
- Required supplies for a zone can be configured in kilos. 
- Crates can be picked up with 1000 or 2000 kilo per crate. 
- Max load for a helicopter is set based on public data. 
- TO COME: Sling load options

classes/persistence/Persistence.lua

@@ -8,7 +8,7 @@ do
 
     ---@class DeathState 
     ---@field isDead boolean
-    ---@field pos Position
+    ---@field pos Vec3
     ---@field heading number
     ---@field type string
     ---@field country_id integer
@@ -204,7 +204,7 @@ do
 
     ---Pass the unit to be saved as "dead"
     ---@param name string
-    ---@param position Position { x, y ,z } 
+    ---@param position Vec3 { x, y ,z } 
     ---@param heading number
     ---@param type string 
     ---@param country_id number