[4.0][webservice][com_plugins] add more query param to GET

[alikon]

Summary of Changes

add more query parameters

Testing Instructions

http://localhost/<yoursite>/api/v1/plugins?folder=system&element=stats&enabled=1

Expected result

you can get result filtered for folder,element and enabled

Actual result

you can get all plugins or 1 plugin

Documentation Changes Required

[brianteeman]

Please add the documentation required flag

[Quy]

I have tested this item ✅ successfully on 0e3f135

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