Upgrade dependencies

Added tests, revised logging

Removed dependency on env file

Try reformatting unit file

Comments clarification

Added readme

Added readme

logger.go

@@ -0,0 +1,27 @@
+package main
+
+import (
+	"log"
+	"os"
+)
+
+// For log management, use journalctl commands:
+//   - View logs: journalctl -u telegram-bot
+//   - Follow logs: journalctl -u telegram-bot -f
+//   - View errors: journalctl -u telegram-bot -p err
+// Refer to the documentation for details on systemd unit setup.
+
+// Initialize loggers for informational and error messages.
+var (
+	InfoLogger  *log.Logger
+	ErrorLogger *log.Logger
+)
+
+// initLoggers sets up separate loggers for stdout and stderr.
+func initLoggers() {
+	// InfoLogger writes to stdout with specific flags.
+	InfoLogger = log.New(os.Stdout, "INFO: ", log.Ldate|log.Ltime|log.Lshortfile)
+
+	// ErrorLogger writes to stderr with specific flags.
+	ErrorLogger = log.New(os.Stderr, "ERROR: ", log.Ldate|log.Ltime|log.Lshortfile)
+}