Rename tools to adopt {namespace}.{function} convention

[mattt]

Currently, iMCP tools are named in dromedaryCase. It's all the same to the AI, but to a user trying to make sense of tools presented in a client, grouping tool names by function makes for a better experience.

Service	Before	After
Calendar	createEvent	events.create
Calendar	fetchEvents	events.fetch
Contacts	searchContacts	contacts.search
Contacts	whoami	contacts.me
Location	getCurrentLocation	location.current
Location	geocodeAddress	location.geocode
Location	reverseGeocode	location.reverse-geocode
Maps	findNearbyPointsOfInterest	maps.explore
Maps	generateMapImage	maps.generate
Maps	getDirections	maps.directions
Maps	getETABetweenLocations	maps.eta
Maps	searchPlaces	maps.search
Messages	fetchMessages	messages.fetch
Reminders	createReminder	reminders.create
Reminders	fetchReminders	reminders.fetch
Weather	getCurrentWeatherForLocation	weather.current
Weather	getDailyForecastForLocation	weather.daily
Weather	getHourlyForecastForLocation	weather.hourly
Weather	getMinuteByMinuteForecastForLocation	weather.minute