DCM Write optimization using batching

DCM Write optimization using batching

- Add method to AlternateIdMatcher to match a batch of paths and return the relevant yang model cm handles
- Extended inventory service to load cm handles without properties (i.e. descendants)
- Switch from NcmpServiceCmHandles to YangModel Cm Handles
- Preload required cm handles (without properties) using batching
- Removed (now) unused methods
- Improved test coverage on some legacy but related functionality

Issue-ID: CPS-2743
Change-Id: Ie80fdd4c12b72fc72ab1a87aa463ec0e6b664e3a
Signed-off-by: ToineSiebelink <toine.siebelink@est.tech>