Add property to skip buildx cacheto

[ggjulio]

I would like to enable or disable cache-to based on whether or not the build run in the CI or a developer workspace.
Did not found a easy way to do so.

Is adding a new property the right approach ?

Via Property :

$> mvn install --docker.skip.cacheTo=false
$>  mvn install --docker.skip.cacheTo=true

Via element :

<property>
   <myProp>false</myProp>
</property>

<!-- ... redacted -->
    <buildx>
	    <platforms>
	         <platform>${docker.platforms}</platform>
	    </platforms>
            <skipCacheTo>${myProp}</skipCacheTo>
	    <cacheTo>type=registry,ref=${docker.cache.registry}/my-image:${git.branch}</cacheTo>
	    <cacheFrom>type=registry,ref=${docker.cache.registry}/my-image:${git.branch}</cacheFrom>
    
    </buildx>
 <!-- ... redacted -->