Add timers for English

[synesthesiam]

First pass at English support for Assist timers (see home-assistant/core#117199)

This adds support for the new intents:

• HassStartTimer - start a new timer
• HassCancelTimer - cancel a timer by name, area, or start time
• HassTimerStatus - report status of timer(s)
• HassIncreaseTimer - add time to a timer
• HassDecreaseTimer - remove time from a timer
• HassPauseTimer - pause a running timer
• HassUnpauseTimer - resume a paused timer

Additionally, a new timers section is present in _fixtures.yaml with information about the timers used in the tests:

timers:
  - start_hours: 1
    total_seconds_left: 100
    rounded_hours_left: 0
    rounded_minutes_left: 1
    rounded_seconds_left: 40
  - name: pizza
    start_minutes: 30
    total_seconds_left: 1505
    rounded_hours_left: 0
    rounded_minutes_left: 25
    rounded_seconds_left: 0
  - area: kitchen
    start_minutes: 5
    total_seconds_left: 190
    rounded_hours_left: 0
    rounded_minutes_left: 3
    rounded_seconds_left: 0

[balloob]

Shouldn't this not match the trailing space?

Suggested change

	name: "pizza "
	name: "pizza"

[synesthesiam]

The wildcard consumes the trailing space in hassil. This will be fixed in a larger PR later that will touch on multiple languages.

[tetele]

I've noticed a naming inconsistency between these new intents and old ones such as HassClimateGetTemperature , HassMediaPause, HassVacuumStart or HassShoppingListAddItem.

The old ones have the object before the action in their name. The new ones have the object (Timer) at the end. It's probably not the end of the world, but it is inconsistent.