Adds prettier user-facing aircraft names. (#726)

This makes the names of the aircraft displayed to the player in the UI more verbose and readable.

It allows allows specific countries to display an aircraft's name differently. An example of this would be the JF-17 Thunder, which is known in China as the FC-1 Fierce Dragon - this now displays correctly in the Liberation UI.

game/db.py

@@ -1,6 +1,8 @@
 from datetime import datetime
 from enum import Enum
 from typing import Dict, List, Optional, Tuple, Type, Union
+import json
+from pathlib import Path
 
 from dcs.countries import country_dict
 from dcs.helicopters import (
@@ -169,6 +171,8 @@ from pydcs_extensions.mb339.mb339 import MB_339PAN
 from pydcs_extensions.rafale.rafale import Rafale_A_S, Rafale_M, Rafale_B
 from pydcs_extensions.su57.su57 import Su_57
 
+PRETTYNAMES_PATH = Path("./resources/units/pretty_unit_names.json")
+
 plane_map["A-4E-C"] = A_4E_C
 plane_map["MB-339PAN"] = MB_339PAN
 plane_map["Rafale_M"] = Rafale_M
@@ -1321,6 +1325,25 @@ def unit_type_name(unit_type) -> str:
 def unit_type_name_2(unit_type) -> str:
     return unit_type.name and unit_type.name or unit_type.id
 
+def unit_pretty_name(country_name: str, unit_type) -> str:
+    original_name = unit_type.name and unit_type.name or unit_type.id
+    default_name = None
+    faction_name = None
+    with PRETTYNAMES_PATH.open("r", encoding="utf-8") as fdata:
+        data = json.load(fdata, encoding="utf-8")
+    type_exists = data.get(original_name)
+    if type_exists is None:
+        return original_name
+    for faction in type_exists:
+        if default_name is None:
+            default_name = faction.get("default")
+        if faction_name is None:
+            faction_name = faction.get(country_name)
+    if default_name is None:
+        return original_name
+    if faction_name is None:
+        return default_name
+    return faction_name
 
 def unit_type_from_name(name: str) -> Optional[Type[UnitType]]:
     if name in vehicle_map: