feat: Enhance CSV import process and data cleanup

- Added support for importing 'periodes' data and adjusted related SQL scripts.
- Introduced a new SQL preparation script to set up the import schema.
- Updated the import_all_csv.sh script to handle new CSV files and tables.
- Implemented checks for required SQL files and improved error handling.
- Modified data types and structures in the import process for better consistency.
- Created a new remove-import-data.sql script to clean up imported data effectively.
- Enhanced the handling of postal codes and addresses in the import logic.
- Added comments and structured the SQL scripts for better readability and maintainability.

sql/prepare-import.sql

@@ -119,24 +119,24 @@ CREATE TABLE "import".users (
 );
 
 CREATE TABLE  "import".tiers (
-    ID varchar(50) NULL,
-    CATEGORIE VARCHAR(255),
-    SECTEUR_AS VARCHAR(255),
-    COMMUNE VARCHAR(255),
-    NOM VARCHAR(255),
-    ACRONYM VARCHAR(64),
-    PHONENUMBER VARCHAR(20),
-    PHONENUMBER_2 VARCHAR(20),
-    EMAIL VARCHAR(255),
-    PERSONNE_NOM VARCHAR(255),
-    PERSONNE_prenom VARCHAR(255),
-    PERSONNE_CIVILITE VARCHAR(20),
+    id varchar(50) NULL,
+    categorie VARCHAR(255),
+    secteur_as VARCHAR(255),
+    commune VARCHAR(255),
+    nom VARCHAR(255),
+    acronym VARCHAR(64),
+    phonenumber VARCHAR(20),
+    phonenumber_2 VARCHAR(20),
+    email VARCHAR(255),
+    personne_nom VARCHAR(255),
+    personne_prenom VARCHAR(255),
+    personne_civilite VARCHAR(20),
     adresse TEXT,
-    CP VARCHAR(10),
-    TIERS_PARENT VARCHAR(255),
-    TIERS_PHYSIQUE_VS_MORALE VARCHAR(50),
-    POINT_DE_CONTACT_SUR_LE_TERRITOIRE TEXT,
-    COORDONNEES TEXT,
-    HORAIRES TEXT,
-    OBSERVATIONS TEXT
+    cp VARCHAR(10),
+    tiers_parent VARCHAR(255),
+    tiers_physique_vs_morale VARCHAR(50),
+    point_de_contact_sur_le_territoire TEXT,
+    coordonnees TEXT,
+    horaires TEXT,
+    observations TEXT
 );