Add PHP 8.5 support.

Also drop support for 8.0 and 8.1

Add support for PHP 8.4

Adds error handling for when the static analysis tool reports an error.
Updated PHPStan's ResultsParser report errors. See issue #135

Add support for PHP 8.3 and Symfony 7 components

Add support for PHP 8.2. Drop support for PHP 7.3 and PHP 7.4

Adds concept of severity. Issues can be either ERROR or WARNING. By default both are reported. However it is possible to exclude warnings from the results by using the --ignore-warnings flag.

Thanks to @MisterIcy who suggested the idea and came up with an initial implementation, from which this PR is inspired by.

Adds the --clean-up option. This picks out 5 random issues for you to fix that are in the baseline. This is to encourage gradually improving the codebase.

Fix critical bug where code depended on webmozart/path that has now beed removed. Thanks @bytestream for fix

New features

• Adds SARB format to support tools that only provide relative and not absolute paths (#96)
• Removed dependency on deprecated library webmozart/path (#110) (Thanks @a4blue and @jdressen)

Other updates

• Updated contributing notes for information about using libraries (#111)
• Bumped PHPStan analysis level to max (#112)

Allow use of Symfony 6 components