Feature: laravel.log summary

[jdias95]

Hello, I developed this feature that we will be using in multiple projects, so I figured I'd submit a PR to the package and see what others think.

What's New:

• Added a new command log-viewer:summary which will take the last 1000 logs in laravel.log, count them, keep track of the first and last dates each one was logged, and create a new log-summary.log file
• Added a new LogSummary class that extends Log.php in order to display the summary in the Log Viewer

Note that a Laravel project will still need to have

LogViewer::extend('summary', \Opcodes\LogViewer\Logs\LogSummary::class);

in AppServiceProvider.php in order for this feature to work. I wasn't sure if there is a way to include this in the PR so this can be avoided. Please let me know if this can be added or if any other alterations should be made.

Known Issue:

• Though the severity levels are the same as laravel.log and appear correctly in the 'Severity' column, they cannot be used to filter the logs via the dropdown in the UI.