Add deffault image in apis

[Mehul175]

in all api related to matchmaking for user profile and organization logo add default image url if user doesnt uploaded image
ref = https://github.com/wpeventmanager/wpem-organizer-app/issues/702

in below apis
filter-user
attendee-profile
meeting list
login

[patel-nimesh]

Now the default image is showing for the organization

If image set then it will show that image