(v0.7.0b) Implement the Huffman Code

v0.7 Huffman Code integration for 3C-Code (#6 (closed))

• Implement Huffman Code
• Integrate the Huffman code compression for 3C-Code
• 2 pre-built tables used for v0.7 (en_EN/ASCII and fr_FR/LATIN1)
• HTFile class to handle .htf (Huffman Table File)