APY-8 : Implement X-Filter as external server

Added options.
APY-8 : Implement X-Filter as external server

Finalized the options and options handlers, started refactoring
assemblers.
APY-8 : Implement X-Filter as external server

Refactored the assemblers, starting with types.
APY-8 : Implement X-Filter as external server

Refactored the types.
APY-8 : Implement X-Filter as external server

Finalized parameters decoding.