feat: generate draft assignments from a staffing matrix

src/Model/PlannedAssignment.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace App\Model;
+
+use App\Enum\StaffingFee;
+use App\Enum\StaffingRole;
+
+/**
+ * One assignment App\Service\Assignment\AssignmentPlanner would create, before its role and
+ * fees are resolved to entities.
+ */
+final readonly class PlannedAssignment
+{
+    /**
+     * @param list<StaffingFee> $fees
+     */
+    public function __construct(
+        public StaffingRole $role,
+        public int $places,
+        /** busProId of the pre-selected boarding point ("Busbegleitung ab"), null for none */
+        public ?int $pickup = null,
+        public array $fees = [],
+    ) {
+    }
+}

src/Model/StaffingCandidate.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace App\Model;
+
+use App\Entity\Destination;
+use App\Entity\StaffingRule;
+
+/**
+ * A travel date the staffing matrix applies to, with what would be created for it.
+ */
+final readonly class StaffingCandidate
+{
+    /**
+     * @param list<PlannedAssignment> $planned
+     */
+    public function __construct(
+        public Destination $destination,
+        public StaffingRule $rule,
+        public array $planned,
+        /** It has had an assignment before, so it is never generated again. */
+        public bool $skipped,
+    ) {
+    }
+}