feat: Add Bearer Token authentication support and optimize code structure

- Add Bearer Token authentication, supporting tunnel access control via the --auth-bearer parameter
- Refactor large modules into smaller, more focused components to improve code maintainability
- Update dependency versions, including golang.org/x/crypto, golang.org/x/net, etc.
- Add SilenceUsage and SilenceErrors configuration for all CLI commands
- Modify connector configuration structure to support the new authentication method
- Update recent change log in README with new feature descriptions

BREAKING CHANGE: Authentication via Bearer Token is now supported, requiring the new --auth-bearer parameter

internal/shared/pool/buffer_pool.go

@@ -3,10 +3,10 @@ package pool
 import "sync"
 
 const (
-	SizeSmall  = 4 * 1024     // 4KB   - HTTP headers, small messages
-	SizeMedium = 32 * 1024    // 32KB  - HTTP request/response bodies
-	SizeLarge  = 256 * 1024   // 256KB - Data pipe, file transfers
-	SizeXLarge = 1024 * 1024  // 1MB   - Large file transfers, bulk data
+	SizeSmall  = 4 * 1024    // 4KB   - HTTP headers, small messages
+	SizeMedium = 32 * 1024   // 32KB  - HTTP request/response bodies
+	SizeLarge  = 256 * 1024  // 256KB - Data pipe, file transfers
+	SizeXLarge = 1024 * 1024 // 1MB   - Large file transfers, bulk data
 )
 
 type BufferPool struct {