Make initial setup easier (configuration wizard, link to docs etc.)

[sypets]

Is your feature request related to a problem? Please describe.

After installing brofix, it might be helpful to get hints if something is not yet configured or not configured correctly, preferrably as

• admin user in the BE
• on the CLI

Describe the solution you'd like
See "test" below.

• Provide a page in the documentation what is minimal setup (already exists: https://docs.typo3.org/p/sypets/brofix/4.1/en-us/Setup/Quickstart.html#minimal-configuration)
• link to it in a typical "first initialization error - missing configuration" scenario, e.g. from CLI
• provide a CLI command to check configuration
• provide a CLI command to dump the current configuration (it is already output in brofix:checklinks, create a separate command)

test

test 1: Missing recipient

Test with a newly created site with minimal setup and brofix installed from scratch:

Run from CLI:

ddev exec "php typo3/sysext/core/bin/typo3 brofix:checklinks"
Use page ids (from site configuration): 1,16

Start checking page 1
=====================

Configuration: Send mail: true
Configuration: Email recipients: 
Configuration: Email sender (email address): [email protected]
Configuration: Email sender (name): 
Configuration: Email template: CheckLinksResults
Checking start page "styleguide TCA demo" [1], depth: infinite
Result for page "styleguide TCA demo" (and infinite depth): number of broken links=0

In GenerateCheckResultFluidMail.php line 52:
                                                                                    
  Missing configuration for email recipient (Tsconfig: mod.brofix.mail.recipients)  
                                                                                    

Here the email recipient is not set up.