Add config flow to fritzbox_callmonitor (#40736)

.coveragerc

homeassistant/components/fritzbox_callmonitor/__init__.py

homeassistant/components/fritzbox_callmonitor/base.py

homeassistant/components/fritzbox_callmonitor/config_flow.py

homeassistant/components/fritzbox_callmonitor/const.py

homeassistant/components/fritzbox_callmonitor/manifest.json

homeassistant/components/fritzbox_callmonitor/sensor.py

homeassistant/components/fritzbox_callmonitor/strings.json

...tant/components/fritzbox_callmonitor/translations/en.json

homeassistant/generated/config_flows.py

requirements_test_all.txt

tests/components/fritzbox_callmonitor/__init__.py

tests/components/fritzbox_callmonitor/test_config_flow.py