feat: add killturn to general meta and update related tests

- Introduced a new meta property `killturn` to the GeneralMeta interface.
- Implemented a function `readMetaNumber` to handle the retrieval of numeric values from meta.
- Updated the `mapGeneralRow` function to ensure `killturn` is required and properly handled.
- Modified various tests to include the `killturn` property in the general's meta data.
- Adjusted related action files to utilize the new GeneralMeta type for better type safety.
- Ensured backward compatibility by updating existing test cases across multiple scenarios.

packages/logic/test/actions/instant/nationStopWar.test.ts

@@ -85,7 +85,7 @@ const buildGeneral = (id: number, nationId: number, cityId: number, name = 'Test
         modifiers: {},
         meta: {},
     },
-    meta: {},
+    meta: { killturn: 24 },
 });
 
 const buildCity = (id: number, nationId: number): City => ({

packages/logic/test/actions/turn/nation.test.ts

@@ -50,7 +50,7 @@ const buildGeneral = (id: number, nationId: number, cityId: number, name = 'Test
         modifiers: {},
         meta: {},
     },
-    meta: {},
+    meta: { killturn: 24 },
 });
 
 const buildCity = (id: number, nationId: number): City => ({

packages/logic/test/actions/turn/nationMissing.test.ts

@@ -105,7 +105,7 @@ const buildGeneral = (id: number, nationId: number, cityId: number, name = 'Test
         modifiers: {},
         meta: {},
     },
-    meta: {},
+    meta: { killturn: 24 },
 });
 
 const buildCity = (id: number, nationId: number, name = `City${id}`): City => ({