Nouveaux items Arme et Armure (DataModel + feuille + CSS)

Items:
- CelestopolWeapon : degats (0/1/2/X), portee (contact/courte/longue), description
- CelestopolArmure : protection (1-2), malus (0-2), description

Config:
- WEAPON_DAMAGE_TYPES et WEAPON_RANGE_TYPES ajoutés dans system.mjs
- Enregistrement des DataModels, sheets et templates dans fvtt-celestopol.mjs
- system.json : types weapon et armure avec htmlFields

UI:
- weapon.hbs : badge de dégâts avec hint, sélecteurs portée/dégâts
- armure.hbs : blocs protection + malus art-déco
- items.less : styles .weapon et .armure

i18n: clés Weapon.*, Armure.*, Sheet.weapon, Sheet.armure

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

templates/weapon.hbs

@@ -0,0 +1,42 @@
+<div class="item-sheet weapon">
+  <header class="item-header">
+    <div class="item-portrait" data-action="editImage">
+      <img src="{{item.img}}" alt="{{item.name}}">
+    </div>
+    <div class="item-header-fields">
+      <input type="text" name="name" value="{{item.name}}" {{#unless isEditable}}disabled{{/unless}}>
+      <div class="item-meta weapon-meta">
+        <div class="form-group">
+          <label>{{localize "CELESTOPOL.Weapon.degats"}}</label>
+          <select name="system.degats" {{#unless isEditable}}disabled{{/unless}}>
+            {{#each damageTypes as |dtype key|}}
+            <option value="{{key}}" {{#if (eq key ../system.degats)}}selected{{/if}}>
+              {{localize dtype.label}}
+            </option>
+            {{/each}}
+          </select>
+        </div>
+        <div class="form-group">
+          <label>{{localize "CELESTOPOL.Weapon.portee"}}</label>
+          <select name="system.portee" {{#unless isEditable}}disabled{{/unless}}>
+            {{#each rangeTypes as |rtype key|}}
+            <option value="{{key}}" {{#if (eq key ../system.portee)}}selected{{/if}}>
+              {{localize rtype.label}}
+            </option>
+            {{/each}}
+          </select>
+        </div>
+      </div>
+    </div>
+  </header>
+
+  <div class="weapon-damage-badge">
+    <span class="damage-label">{{localize "CELESTOPOL.Weapon.degats"}}</span>
+    <span class="damage-value">{{system.degats}}</span>
+    <span class="damage-hint">{{localize (lookup (lookup damageTypes system.degats) "hint")}}</span>
+  </div>
+
+  <div class="form-group description-group">
+    {{formInput systemFields.description enriched=enrichedDescription value=system.description name="system.description" toggled=true}}
+  </div>
+</div>