This commit introduces a more secure sigil workflow by separating the transformation logic from the serialization logic.
- The `Trix` struct now has `Pack()` and `Unpack()` methods to apply sigil transformations directly to the payload.
- The `Encode()` and `Decode()` functions are now solely responsible for serialization, no longer handling sigil logic.
- The recommended workflow is to `Pack()` the data (obfuscating it), then encrypt it, and finally `Encode()` the container. This prevents cleartext from being sent to the CPU's encryption instructions.
This change enhances security by adding a user-defined obfuscation layer before the encryption process begins, true to the spirit of Enchantrix.