[INTERNAL] model.FilterProcessor: Fix jsdoc
[INTERNAL] model.FilterProcessor: Fix jsdoc

Declare model.FilterProcessor class as module and
add @static annotation to each function.

Change-Id: Iea2a09f1af52c942dcb61ef41556b09088dfcef3

SAP/openui5,SAP/openui5,SAP/openui5,SAP/openui5