Print "Include scale in print" plugin

[mbarto]

Description

We want a subplugin for the Print plugin that:

• shows the current printing scale
• allows including the scale in the printed page, using a checkbox

Connected to geosolutions-it/mapfish-print#37

What kind of improvement you want to add? (check one with "x", remove the others)

• [x] Minor changes to existing features
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Other... Please describe:

Other useful information

[offtherailz]

@tdipisa this is not included by default as a panel in default print. Is a separate plug-in, available but not included in the build. Should we include? I don't know if makes sense to make the print plugin to complex for the user as it's default implementation for testing. Same for https://github.com/geosolutions-it/MapStore2/issues/7773#issuecomment-1079185252

[tdipisa]

@offtherailz thank you for reporting. Same response.

[ElenaGallo]

@tdipisa I can not test the Scale plug-in on MS because it is not present in the plugins.js file and the plugin is not present on the Plugin doc.

[ElenaGallo]

Missing documentation and tests will be done with #8596