Rework BindingCodecTreeNode

Rework BindingCodecTreeNode

There is a strong tie-in between NodeCodecContext and
BindingCodecTreeNode, where the latter has massive oversubscription
of context.

This patch separates the semantics out, so that we end up with
cleaner interfaces and proper decomposition of concerns, so that
further binding concepts can be handled by the codec infrastructure.

This is a preparatory patch for both TypedObject caching and
Annotation/OpaqueObject translation.

JIRA: MDSAL-10
JIRA: MDSAL-285
JIRA: MDSAL-407
Change-Id: Ibc8d155b8a91b6081cd0eecd5d25fae56cb4699a
Signed-off-by: Jie Han <han.jie@zte.com.cn>
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>