First implementation of GeoNetwork 2.10 integration for sir-admin viewer

* Early version of this integration for #85848 task.
* Added GeoNetwork js library
* Manage login in actual proxy
* Added a simple manager to envelop GeoNetwork settings and templates configuration.
* Example of use in a GXP tool to insert a new metadata.
Merge branch '85848-GeoNetwork_integration_first_version' into 86870-gn_integration_01
Help panel and tool integration #86870
Show root node in channels tool #86902
Merge pull request #220 from alediator/86902-thematic_channels_fix

Show root node in channels tool #86902
Repair incorrect node refresh between different trees. Fixes #86904
Merge pull request #221 from alediator/86904-folder_tree_refresh_nodes_bug

Repair incorrect node refresh between different trees. Fixes #86904
Merge branch 'master' into 86870-gn_integration_01
Fixes  #86925 by setting autoHeight to true for both the panel and the window used for persistence.
Fixes #86925 by setting the autoHeight config to true in both the panel and the window.
Merge pull request #222 from luisromangz/86925-SaveLayerWindowLayout

Fixes #86925 by setting the autoHeight config to true in both the panel ...
Merge branch 'master' of github.com:Emergya/sir-geoexplorer-base-js
Fixes #86995 by removing an asignment of the map to the feature layer which caused the layer's setMap method to no initialize the layer correctly, impeding its rendering...
Merge pull request #223 from luisromangz/86995-FeatureEditorDontShowSelectedFeatureNorHandles

#86995 feature editor dont show selected feature nor handles
Fixes #86681 and #86015 by 1) centralizing the file name genaration in the the UrlExporter parent class and 2) setting the extension for shp downloads to zip.
Merge pull request #224 from luisromangz/86015_86681-NameAndExtensionOfExportedLayersFiles

Fixes #86681 and #86015 by 1) centralizing the file name genaration in t...
Improves the fix for #86681 by removing the worskpace remover, which is no longer needed.
Merge pull request #225 from luisromangz/86681-ImproveExportingFileDownloadName

Improves the fix for #86681 by removing the worskpace remover, which is ...
Fixes #85836 by using the non proxied url to make the download requests, as it seems that the proxy returns 0 byte files in that case (but not in the case of e.g. public layers). Could be undone if #87063 is ever fixed.
Merge pull request #226 from luisromangz/85836-FixTemporalLayersExport

Fixes #85836 by using the non proxied url to make the download requests,...