[TASK] Indexed search functionallity

Its a basic indexed search plugin to search the term from the site

Change-Id: I19b65df2741d252f6c353f01d566c5b4e14f0e6e
[TASK] Implemented searching in node by searchable: TRUE flag

Relates: #12961
Sprint: 31

Change-Id: I7e9e2ca0d88aa33cfca4b2f145d7e498311d4850
[TASK] Added configuration to overwrite template path