Tip of the Spear Idea ID

Add this idea with the add_ideas command and the idea ID grand_battleplan_army_spirit.

While active, Tip of the Spear applies the following modifiers in Hearts of Iron IV:

• Unit Marine Design Cost-50%
• Unit Mountaineers Design Cost-50%
• Unit Paratrooper Design Cost-50%
• Unit Ranger Battalion Design Cost-50%
• Special Forces Cap+24%
• Extra Paratrooper Supply Grace+24
• Extra Marine Supply Grace+24