Added cfCamDown() function

Changed Pixit regex (PXT => PX) to remain coherent with LibCommon
Changed component timer regex to reflect framework document

Enumerated types naming convention changed

Including TODOs.

Definitions taken from draft specifications(CAM TS 102 637-2 V1.0.4/DENM TS 102 637-3 V2.1.1).
Corrected ASN.1 for syntactically incorrect definitions.
Added module definitions.