Refactor to enforce strictNullChecks

This commit applies `strictNullChecks` to the entire codebase to improve
maintainability and type safety. Key changes include:

- Remove some explicit null-checks where unnecessary.
- Add necessary null-checks.
- Refactor static factory functions for a more functional approach.
- Improve some test names and contexts for better debugging.
- Add unit tests for any additional logic introduced.
- Refactor `createPositionFromRegexFullMatch` to its own function as the
  logic is reused.
- Prefer `find` prefix on functions that may return `undefined` and
  `get` prefix for those that always return a value.

src/infrastructure/Log/ElectronLogger.ts

@@ -7,6 +7,11 @@ export function createElectronLogger(logger: Partial<ElectronLog>): ILogger {
     throw new Error('missing logger');
   }
   return {
-    info: (...params) => logger.info(...params),
+    info: (...params) => {
+      if (!logger.info) {
+        throw new Error('missing "info" function');
+      }
+      logger.info(...params);
+    },
   };
 }