### Description
Given all the shell files that now exist in the repo, would be nice to
have linting/formatting around them (in addition to the existing
shellcheck which doesn't do anything to format the shell code). This PR
introduces `shfmt` to both check for changes and apply formatting when
the associated make targets are called.
This PR:
- defines rbac_data as a SourceMetadata field,
- manages connections to an external api for obtaining rbac data with
ConnectorRBAC class,
- serializes rbac data and saves it to the disk,
- matches the rbac_data in the disk to each IngestDoc, using a common
field,
- forwards rbac data to Elements, via the partition() function
To test the changes, run `examples/ingest/sharepoint/ingest.sh` with the
relevant rbac & connector credentials
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Co-authored-by: ryannikolaidis <1208590+ryannikolaidis@users.noreply.github.com>
Co-authored-by: ahmetmeleq <ahmetmeleq@users.noreply.github.com>
