NIFI-7101: PivotDatabaseRecordLookupService: add new lookup service which pivot a key/value table

[CZuegner]

Example:

Database Table

ID	KEY_COL	VAL_COL
1	A	One
1	B	Two

Result Record for Lookup Key 1

map
{A=One, B=Two}

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[CZuegner]

This pull-request depends on PR NIFI-7099. If NIFI-7099 is merge I will update this PR.

[github-actions]

We're marking this PR as stale due to lack of updates in the past few months. If after another couple of weeks the stale label has not been removed this PR will be closed. This stale marker and eventual auto close does not indicate a judgement of the PR just lack of reviewer bandwidth and helps us keep the PR queue more manageable. If you would like this PR re-opened you can do so and a committer can remove the stale tag. Or you can open a new PR. Try to help review other PRs to increase PR review bandwidth which in turn helps yours.