[2.3.0] Checkmk Werk 15165 created: Add two livestatus column: prediction_file and prediction_files

Title: Add two livestatus column: prediction_file and prediction_files Class: feature Compatible: compat Component: core Date: 1694757240 Edition: cre Knowledge: undoc Level: 1 Version: 2.3.0b1 Add two livestatus columns to the service table. The "prediction_files" column returns a list of files under "var/check_mk/prediction/HOST/SERVICE/". Example: <tt>lq 'GET services\nColumns: prediction_files\nFilter: description = Uptime'</tt> The "prediction_file" column is a dynamic column that returns the content of a file under "var/check_mk/prediction/HOST/SERVICE/" Example: <tt>lq 'GET services\nColumns: prediction_file:file:metric1/prediction1\nFilter: description = Uptime'</tt>