Replace static buffer with dynamic allocation in writercwtdata()

[AhmedAlian7]

Description

The writercwtdata() function in src/lib_ccx/output.c currently uses a static array for the cbbuffer variable. There's a TODO comment requesting to replace this with dynamic memory allocation using malloc.

File: src/lib_ccx/output.c
Line: ~156
Function: writercwtdata()

Current Implementation

static unsigned char cbbuffer[0xFFFF * 3]; // TODO: use malloc

Proposed Change

Replace the static array with dynamically allocated memory to:

• Improve memory efficiency
• Follow modern C best practices
• Only allocate memory when the function is actually used

Benefits

1. Memory is only allocated when needed
2. Better resource management
3. Maintains backward compatibility
4. No change to external behavior

Implementation Plan

I'm working on a PR that will:

1. Convert cbbuffer from static array to dynamically allocated pointer
2. Allocate memory on first use of the function
3. Add proper error handling for allocation failures
4. Add debug logging for buffer allocation