Add categories to sort/filter works/surveys

ui/src/routes/categories/[cid]/index.svelte

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+<script context="module">
+ import { getWork } from '$lib/works';
+
+ export async function load({ params }) {
+     return {
+         props: {
+             cid: params.cid,
+         },
+     };
+ }
+</script>
+
+<script>
+ import { goto } from '$app/navigation';
+
+ import { user } from '$lib/stores/user';
+ import CategoryAdmin from '$lib/components/CategoryAdmin.svelte';
+ import { Category, getCategory } from '$lib/categories';
+
+ export let cid;
+
+ let categoryP = null;
+ $: {
+     categoryP = getCategory(cid);
+ }
+</script>
+
+{#await categoryP then category}
+    <div class="d-flex align-items-center">
+        <h2>
+            <a href="categories/" class="text-muted" style="text-decoration: none">&lt;</a>
+            {category.label}
+        </h2>
+    </div>
+
+    {#if $user && $user.is_admin}
+        <CategoryAdmin {category} on:saved={(e) => { goto(`categories/`)}} />
+    {/if}
+{/await}

ui/src/routes/categories/index.svelte

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+<script>
+ import { goto } from '$app/navigation';
+
+ import { user } from '$lib/stores/user';
+ import { getCategories } from '$lib/categories';
+ import { getPromos } from '$lib/users';
+
+ function showCategory(category) {
+     goto(`categories/${category.id}`)
+ }
+
+ let filterPromo = "";
+</script>
+
+{#if $user && $user.is_admin}
+    <a href="categories/new" class="btn btn-primary ml-1 float-end" title="Ajouter une catégorie">
+        <i class="bi bi-plus"></i>
+    </a>
+    {#await getPromos() then promos}
+        <div class="float-end me-2">
+            <select class="form-select" bind:value={filterPromo}>
+                <option value="">-</option>
+                {#each promos as promo, pid (pid)}
+                    <option value={promo}>{promo}</option>
+                {/each}
+            </select>
+        </div>
+    {/await}
+{/if}
+<h2>
+  Catégories // cours
+</h2>
+
+{#await getCategories()}
+    <div class="text-center">
+        <div class="spinner-border text-danger mx-3" role="status"></div>
+        <span>Chargement des catégories &hellip;</span>
+    </div>
+{:then categories}
+    <table class="table table-sm table-striped table-hover">
+        <thead>
+            <tr>
+                <th>ID</th>
+                <th>Nom</th>
+                <th>Promo</th>
+                <th>Étendre</th>
+            </tr>
+        </thead>
+        <tbody>
+            {#each categories.filter((c) => (filterPromo === "" || filterPromo === c.promo)) as c (c.id)}
+                <tr>
+                    <td>{c.id}</td>
+                    <td>
+                        <a href="categories/{c.id}">{c.label}</a>
+                    </td>
+                    <td>{c.promo}</td>
+                    <td>
+                        <span
+                            class="badge"
+                            class:bg-success={c.expand}
+                            class:bg-danger={!c.expand}
+                        >
+                            {c.expand?"Oui":"Non"}
+                        </span>
+                    </td>
+                </tr>
+            {/each}
+        </tbody>
+    </table>
+{/await}

ui/src/routes/categories/new.svelte

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+<script>
+ import { goto } from '$app/navigation';
+
+ import { user } from '$lib/stores/user';
+ import CategoryAdmin from '$lib/components/CategoryAdmin.svelte';
+ import { Category } from '$lib/categories';
+
+ let category = new Category();
+</script>
+
+<div class="d-flex align-items-center">
+    <h2>
+        <a href="categories/" class="text-muted" style="text-decoration: none">&lt;</a>
+        Nouvelle catégorie
+    </h2>
+</div>
+
+{#if $user && $user.is_admin}
+    <CategoryAdmin {category} on:saved={(e) => { goto(`categories/${e.detail.id}`)}} />
+{/if}