core/scope.js: log window URL and whether it is an iframe
core/scope.js: log window URL and whether it is an iframe

See #792

$ DEBUG=phantomas:scope:log ./bin/phantomas.js http://0.0.0.0:8888/iframe.html 2>&1 | grep "page scope"
2020-10-07T14:20:47.350Z phantomas:scope:log phantomas page scope initialized for <http://0.0.0.0:8888/iframe.html> (is an iframe: true)
2020-10-07T14:20:47.351Z phantomas:scope:log domQueries: initializing page scope code
2020-10-07T14:20:47.353Z phantomas:scope:log domQueries: page scope code initialized
2020-10-07T14:20:47.373Z phantomas:scope:log phantomas page scope initialized for <http://0.0.0.0:8888/image-scaling.html> (is an iframe: false)
2020-10-07T14:20:47.373Z phantomas:scope:log domQueries: initializing page scope code
2020-10-07T14:20:47.376Z phantomas:scope:log domQueries: page scope code initialized

gmetais/phantomas,gmetais/phantomas,macbre/phantomas,macbre/phantomas,gmetais/phantomas,macbre/phantomas