allow preset filters and related schemas for cloud

This refactors the cloud aggregation to make use of the
SearchSQLBuilder, this in turn allows for reusing much but not all of
the default parameter

allow preset filters and related schemas for cloud

This refactors the cloud aggregation to make use of the
SearchSQLBuilder, this in turn allows for reusing much but not all of
the default parameter handling.

By allowing joins (on pid) and setting filters we can output clouds
based on the same data as a shown aggregation.

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Fix cloud controls

Fixes #713

No direct search execution

�� Automatic code style fixes

Use new \dokuwiki\plugin\sqlite\SQLiteDB class for DB access

correctly handle serial data in cloud control

PHP code sniffer autofixes

Fix schema assignment check in cloud

Update cloud queries

Automatic coding style fixes

Make more SQL queries contingent on the join column ($idColumn)

fix: don't consider number of empty fields for cloud item size

fixes #312

fix for method comment

refactor: Use SQL LIMIT statement => faster ����

Since we do not have pagination for struct cloud, we can Limit the
number of results already within SQL.

fix: use generated aliases to prevent duplicates

Ensure the table-aliases are unique even if there are two schemas with
multi-columns. See also commit db7970ca33d66b924443af737b13af2b8d5bb664

fix: repair multi-column cloud sql

feat: support option min for cloud aggregation

feat: Adjust tag size by its count

refactor: Use Search class and hence support limit