Ajout des notification + page employé (#6)

| Numéro du ticket | Titre du ticket |
|------------------|-----------------|
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## Description de la PR

## Modification du .env

## Check list

- [ ] Pas de régression
- [ ] TU/TI/TF rédigée
- [ ] TU/TI/TF OK
- [ ] CHANGELOG modifié

Reviewed-on: #6
Co-authored-by: tristan <tristan@yuno.malio.fr>
Co-committed-by: tristan <tristan@yuno.malio.fr>

migrations/Version20260309140000.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace DoctrineMigrations;
+
+use Doctrine\DBAL\Schema\Schema;
+use Doctrine\Migrations\AbstractMigration;
+
+final class Version20260309140000 extends AbstractMigration
+{
+    public function getDescription(): string
+    {
+        return 'Create employee_rtt_payments table for RTT paid hours tracking.';
+    }
+
+    public function up(Schema $schema): void
+    {
+        $this->addSql(<<<'SQL'
+                CREATE TABLE employee_rtt_payments (
+                    id SERIAL PRIMARY KEY,
+                    employee_id INT NOT NULL REFERENCES employees(id) ON DELETE CASCADE,
+                    year INT NOT NULL,
+                    month INT NOT NULL,
+                    minutes INT NOT NULL,
+                    rate VARCHAR(10) NOT NULL,
+                    created_at TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL DEFAULT NOW(),
+                    updated_at TIMESTAMP(0) WITHOUT TIME ZONE NOT NULL DEFAULT NOW()
+                )
+            SQL);
+        $this->addSql('CREATE INDEX idx_rtt_payment_employee_year ON employee_rtt_payments (employee_id, year)');
+        $this->addSql("COMMENT ON TABLE employee_rtt_payments IS 'Paiements RTT par employe, mois et taux de majoration.'");
+        $this->addSql("COMMENT ON COLUMN employee_rtt_payments.rate IS 'Taux de majoration: 25 ou 50.'");
+        $this->addSql("COMMENT ON COLUMN employee_rtt_payments.minutes IS 'Minutes RTT payees pour ce mois et ce taux.'");
+    }
+
+    public function down(Schema $schema): void
+    {
+        $this->addSql('DROP TABLE employee_rtt_payments');
+    }
+}