Update plugins.md
Update plugins.md

add plugin Panel Layers
msiadak/Leaflet,msiadak/Leaflet,Leaflet/Leaflet,Neorth/Leaflet,Neorth/Leaflet,sisou/Leaflet,iZucken/Leaflet,scaddenp/Leaflet,Trufi/Leaflet,CapeSepias/Leaflet,AP-whitehat/Leaflet,Trufi/Leaflet,jasonoverland/Leaflet,CapeSepias/Leaflet,Ubisense/Leaflet,geoloep/Leaflet,Trufi/Leaflet,rlugojr/Leaflet,iOffice/Leaflet,davojta/Leaflet,msiadak/Leaflet,stefanocudini/Leaflet,geoloep/Leaflet,scaddenp/Leaflet,brah/Leaflet,rlugojr/Leaflet,akrzyzanowskino/TeamSE,AP-whitehat/Leaflet,iOffice/Leaflet,codeator/Leaflet,tsantacruz/RotationalMarker,akrzyzanowskino/TeamSE,Neorth/Leaflet,Ubisense/Leaflet,CapeSepias/Leaflet,iZucken/Leaflet,brah/Leaflet,davojta/Leaflet,jasonoverland/Leaflet,davojta/Leaflet,iOffice/Leaflet,jasonoverland/Leaflet,codeator/Leaflet,iZucken/Leaflet,akrzyzanowskino/TeamSE,Ubisense/Leaflet,frogcat/Leaflet,AP-whitehat/Leaflet,brah/Leaflet,geoloep/Leaflet,sisou/Leaflet,Leaflet/Leaflet,stefanocudini/Leaflet,tsantacruz/RotationalMarker,frogcat/Leaflet,sisou/Leaflet,frogcat/Leaflet,rlugojr/Leaflet,tsantacruz/RotationalMarker,scaddenp/Leaflet,codeator/Leaflet,Leaflet/Leaflet,stefanocudini/Leaflet