Marketplace Search - Fields Extraction

Context 

Current search on the marketplace needs to be improve. The marketplace place search is currently indexing every field on ans packages' metadata.

When we search we need to exclude technical fields:

To Do :

Configure default fulltext index to exclude the following fields:

• nxpkg:dependencies
• nxpkg:license
• nxpkg:targetPlatform
• nxpkg:targetPlatformRange
• nxpkg:targetPlatformName
• nxpkg:dependencies
• nxpkg:optionalDependencies
• nxpkg:conflicts
• nxpkg:provides
• nxpkg:registries 

AC :

• I upload a package with a certain description, I search for a term in that description. The results I get include the uploaded package, and others with that term if that term is part of the above fields. 
• I upload a package with a dependency on nuxeo-web-ui, when I search nuxeo-web-ui the package is not returned.

Doc:

• https://doc.nuxeo.com/nxdoc/repository-configuration/
• https://doc.nuxeo.com/nxdoc/full-text-queries/#using-full-text-queries-in-nxql