feat: implement exponential backoff strategy for error handling in extractor and loader processes; enhance retry configuration options

internal/app/config/migration.go

@@ -9,6 +9,9 @@ import (
 
 type RetryConfig struct {
 	Attempts int `yaml:"attempts"`
+	BaseDelayMs int `yaml:"base_delay_ms"`
+	MaxDelayMs int `yaml:"max_delay_ms"`
+	MaxJitterMs int `yaml:"max_jitter_ms"`
 }
 
 type JobConfig struct {