Node API - Find root by anchor method performance

- Modified findFirstRootByAnchor
- Used fragment extract to build fragment entity to get root data node.

Reviewers : Toine, Priyank and Joe

Issue-ID: CPS-1171
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>
Change-Id: I843f270e4781f91ae496f39b976e2a7f2a14d55e
Signed-off-by: sourabh_sourabh <sourabh.sourabh@est.tech>
6 files changed