Terra-layer

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/!\ Major breaking change for style génération

* Improve style generation, API updated

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Breaking changes
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* Minisheet api as evolved.
* Permissions are now implemented

Changes
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* Add github actions
* [Breaking change] Move minisheet info into a config field
* [Breaking change] Upgrade terra-settings & terra-accounts

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* Remove popup_enable & minisheet_enable filter fields

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* Move popup data into a config json field for deeper customization/configuration

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* Feature: Show scene with it's map settings from config json field
* Feature: Add credit from layer's source
* Fix: Tabular view is exportable only if the global export parameter is set to true on the layer

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* Fix bad format type sent to server
* Add an option to not generate wizard
* Fix circle legend generator using decimal value
* Style generator: graduated, no data close to small value in legend
* Style generator: deal with null value vs empty table
* Gen style, fix color usage
* Fix & remove default params to gen_legend_circle()
* Add a dict level style in wizard config
* Style generator, support of null value on layer style and legend
* Updating a layer's source do not delete field settings anymore