Create llx_element_categorie.sql

The goal of table llx_element_categorie is to replace all tables llx_categories_xxx (with one table).
the llx_element_tag table initially intended for this does not have the correct nomenclature to express its real use (and was used for other things before)
more informations here : https://github.com/Dolibarr/dolibarr/pull/21192

htdocs/install/mysql/tables/llx_element_categorie.sql

@@ -0,0 +1,25 @@
+-- ============================================================================
+-- Copyright (C) 2022 charlene Benke       <charlene@patas-monkey.com>
+--
+-- This program is free software; you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation; either version 3 of the License, or
+-- (at your option) any later version.
+--
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License
+-- along with this program. If not, see <https://www.gnu.org/licenses/>.
+--
+-- ============================================================================
+
+create table llx_element_categorie
+(
+  rowid integer AUTO_INCREMENT PRIMARY KEY,
+  fk_categorie  integer NOT NULL,
+  fk_element  integer NOT NULL,
+  import_key    varchar(14)
+)ENGINE=innodb;