RuleTimer0 applies to all RuleTimers

[barbudor]

Description:

Following request #10338
This implements RuleTimer0 which applies to all rules timer simultaneously.
The major interest is RuleTimer0 0 to clear all pending rule timers.

Independently of this change (already present in older version of Tasmota), I noticed during the test that if no rule is enabled and a RuleTimer is started, RuleTimers do not "stop" at 0 because RulesEverySecond() do not process rules nor rules timers. This means if a rule is enabled later on, the RuleTimer may trigger unexpectedly. (testing if (Settings.rule_enabled && !Rules.busy)
This doesn't seems to be a major issue. However a small rewrite, moving the test inside the Timer loop would do the trick.

Happy to add it to this PR if you want.

Checklist:

• The pull request is done against the latest development branch
• Only relevant files were touched
• Only one feature/fix was added per PR and the code change compiles without warnings
• The code change is tested and works on Tasmota core ESP8266 V.2.7.4.9
• The code change is tested and works on Tasmota core ESP32 V.1.0.5-rc4
• I accept the CLA.

NOTE: The code change must pass CI tests. Your PR cannot be merged unless tests pass

[arendst]

Happy to add it to this PR if you want.

Yes pls do.

[barbudor]

Hi, Theo. Done.
Now ruletimers started while no rule is enabled will properly stops at 0.
I also checked with a few test that it doesn't break on time#minute