CurrentHill USA military assets pack (#461)

* usa military assets pack

* minor fixes to have missiles

* tweak nasams 3

* fix preset groups bug

* adjust b-21 name

* Update faction.py

bugfixes will go in a different branch

resources/layouts/anti_air/MIM-104.yaml

@@ -0,0 +1,53 @@
+name: MIM-104 Patriot Battery
+tasks:
+  - LORAD
+groups:
+  - Patriot:
+    - name: Patriot Battery 0
+      unit_count:
+        - 2
+      unit_classes:
+        - SearchTrackRadar
+    - name: Patriot Battery 1
+      unit_count:
+        - 1
+      unit_classes:
+        - Logistics
+    - name: Patriot Battery 2
+      unit_count:
+        - 1
+      unit_types:
+        - MIM104_ECS
+    - name: Patriot Battery 3
+      unit_count:
+        - 1
+      unit_classes:
+        - Logistics
+    - name: Patriot Battery 4
+      unit_count:
+        - 1
+      unit_types:
+        - MIM104_EPP
+    - name: Patriot Battery 5
+      unit_count:
+        - 8
+      unit_classes:
+        - Launcher
+  - PD:
+    - name: Patriot Battery 7
+      optional: true
+      sub_task: PointDefense
+      unit_count:
+        - 1
+        - 2
+      unit_classes:
+        - SHORAD
+    - name: Patriot Battery 6
+      sub_task: AAA
+      optional: true
+      unit_count:
+        - 1
+        - 2
+      unit_classes:
+        - AAA
+layout_file: resources/layouts/anti_air/Patriot_Battery.miz

resources/layouts/anti_air/NASAMS-3 Site.yaml

@@ -0,0 +1,55 @@
+name: NASAMS 3 Site
+tasks:
+  - MERAD
+  - LORAD
+groups:
+  - SAM:
+    - name: Search Radar
+      unit_count:
+        - 1
+      unit_classes:
+        - SearchRadar
+        - SearchTrackRadar
+    - name: Track Radar
+      optional: true # Allow groups without TR
+      fill: false # Do not fill with faction possible units
+      unit_count:
+        - 1
+      unit_classes:
+        - TrackRadar
+    - name: Command Post
+      optional: true
+      fill: false # Do not fill with faction possible units
+      unit_count:
+        - 1
+      unit_classes:
+        - CommandPost
+    - name: Launcher
+      unit_count:
+        - 4
+      unit_types:
+        - CH_NASAMS3_LN_AMRAAM_ER
+    - name: Logistics
+      optional: true
+      unit_count:
+        - 1
+        - 2
+      unit_classes:
+        - Logistics
+  - PD: # Point Defense as separate group
+    - name: PD
+      sub_task: PointDefense
+      optional: true
+      unit_count:
+        - 2
+      unit_types:
+        - CH_NASAMS3_LN_AIM9X2
+    - name: AAA
+      sub_task: AAA
+      optional: true
+      unit_count:
+        - 1
+        - 2
+      unit_classes:
+        - AAA
+layout_file: resources/layouts/anti_air/8_Launcher_Circle.miz