php 8.1 deprecations (php-debugbar#494)

* php 8.1 deprecations

* php 8.1 deprecations

* Update DataFormatter.php

Add #[ReturnTypeWillChange] attribute to suppress deprecation warning… (

php-debugbar#481)

* Add #[ReturnTypeWillChange] attribute to suppress deprecation warnings and fatal error

Error occurs on php 7.4 >=

* Same in other 4 methods #[\ReturnTypeWillChange]

Add #[\ReturnTypeWillChange] in other 4 methods to avoid E_DEPRECATED or E_FATAL (php 7.4 >=)

Update run-tests.yml (php-debugbar#487)

Check log messages before interpolate (php-debugbar#477)

Fix vardumper php-debugbar#474 (php-debugbar#475)

PHP 8.0: TraceablePDO adding query arguments (php-debugbar#460)

* php 8 fix

* Update TraceablePDO.php

Update README.md

Add return value to measure() function. (php-debugbar#443)

Change-Id: I0e0277a019545bae6b4a9854b915a83bcea6757a

Co-authored-by: vdauchy <[email protected]>

Skip decimals if < 100ms

Symfony 5 support added (php-debugbar#431)