docs: Add attribute getter/setter naming convention example
docs: Add attribute getter/setter naming convention example

bacontext/mopidy,ZenithDK/mopidy,kingosticks/mopidy,priestd09/mopidy,mokieyue/mopidy,kingosticks/mopidy,glogiotatidis/mopidy,liamw9534/mopidy,bencevans/mopidy,quartz55/mopidy,bencevans/mopidy,bacontext/mopidy,jcass77/mopidy,swak/mopidy,SuperStarPL/mopidy,vrs01/mopidy,priestd09/mopidy,mokieyue/mopidy,SuperStarPL/mopidy,kingosticks/mopidy,priestd09/mopidy,woutervanwijk/mopidy,ali/mopidy,pacificIT/mopidy,swak/mopidy,rawdlite/mopidy,mokieyue/mopidy,jmarsik/mopidy,dbrgn/mopidy,jmarsik/mopidy,vrs01/mopidy,quartz55/mopidy,bacontext/mopidy,mopidy/mopidy,dbrgn/mopidy,hkariti/mopidy,rawdlite/mopidy,tkem/mopidy,bencevans/mopidy,vrs01/mopidy,ali/mopidy,rawdlite/mopidy,swak/mopidy,jcass77/mopidy,jodal/mopidy,bencevans/mopidy,adamcik/mopidy,diandiankan/mopidy,diandiankan/mopidy,rawdlite/mopidy,tkem/mopidy,pacificIT/mopidy,liamw9534/mopidy,adamcik/mopidy,ZenithDK/mopidy,ali/mopidy,quartz55/mopidy,bacontext/mopidy,glogiotatidis/mopidy,dbrgn/mopidy,woutervanwijk/mopidy,jcass77/mopidy,hkariti/mopidy,ZenithDK/mopidy,jmarsik/mopidy,SuperStarPL/mopidy,pacificIT/mopidy,jmarsik/mopidy,SuperStarPL/mopidy,jodal/mopidy,swak/mopidy,hkariti/mopidy,tkem/mopidy,adamcik/mopidy,ali/mopidy,ZenithDK/mopidy,pacificIT/mopidy,vrs01/mopidy,glogiotatidis/mopidy,dbrgn/mopidy,diandiankan/mopidy,mokieyue/mopidy,diandiankan/mopidy,hkariti/mopidy,mopidy/mopidy,jodal/mopidy,tkem/mopidy,mopidy/mopidy,glogiotatidis/mopidy,quartz55/mopidy