add fast publishing method

[devkral]

what

sometimes more than update should be fired. This MR improves the speed of updates by simultaneous executing them (see http client) (no speed comparisation done yet). It also adds a publishFast method for fire and forget or request collect operations (publishBatch).

Extend tested

I only used the unittests. Real life tests are still missing, as well as a speed benchmark

[devkral]

I cannot reproduce the phpstan error locally.

phpstan analyse
Note: Using configuration file <path>/phpstan.neon.
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 [OK] No errors