Wrapping parser able to automatically infer transparent vs non-transparent framing techniques

[leodido]

Create a generic syslog parser able to automatically infer transparent framing technique from non-transparent ones.

A significative quote from RFC6587.

A transport receiver can assume that non-transparent-framing is used if a syslog frame starts with the ASCII character "<" (%d60).

Ref. https://tools.ietf.org/html/rfc6587#section-3.4.2

Relates to #16.