Add Basic Logging System using zap/zerolog

[rtb-12]

Add basic logging to track core operations and errors in Memoria using a structured logging library.

Required Logging Points

1. Core Operations in memoria.go:
   • Read/Write operations
   • Cache hits/misses
   • File operations
   • Error conditions

Implementation Details
Add logger to the Memoria struct:

type Options struct {
    // existing fields
    Logger Logger // Interface for logging
}

type Logger interface {
    Info(msg string, fields ...Field)
    Error(msg string, fields ...Field)
}

Learning Resources

1. Go zap logger
2. Zerolog docs

Tasks

• Add logger interface
• Implement basic logging in:
  • Read
  • Write
• cache.go operations
• Add configuration options
• Update documentation