fix(core): Improve logging and error handling by introducing custom error classes and a global logging interface while refactoring network diagnostics methods.

ts/logging.ts

@@ -0,0 +1,30 @@
+/**
+ * Injectable logging interface and global logger
+ */
+export interface Logger {
+  /** Debug-level messages */
+  debug?(...args: unknown[]): void;
+  /** Informational messages */
+  info(...args: unknown[]): void;
+  /** Warning messages */
+  warn?(...args: unknown[]): void;
+  /** Error messages */
+  error(...args: unknown[]): void;
+}
+
+let globalLogger: Logger = console;
+
+/**
+ * Replace the global logger implementation
+ * @param logger Custom logger adhering to Logger interface
+ */
+export function setLogger(logger: Logger): void {
+  globalLogger = logger;
+}
+
+/**
+ * Retrieve the current global logger
+ */
+export function getLogger(): Logger {
+  return globalLogger;
+}