feat(web/converse): Import repository

Imports the converse forum software I wrote a few years ago. I want to
clean this up a bit and try using Hotwire with it.

Note: The original repository was AGPL-3.0 licensed. I'm the copyright
holder and have relicensed it to GPL-3.0 in the commit that is being
merged.

Imported from: https://github.com/tazjin/converse

git-subtree-dir: web/converse
git-subtree-mainline: 386afdc794
git-subtree-split: 09168021e7
Change-Id: Ia8b587db5174ef5b3c52910d3d027199150c58e0

web/converse/src/schema.rs

@@ -0,0 +1,88 @@
+// Copyright (C) 2018-2021 Vincent Ambo <tazjin@tvl.su>
+//
+// This file is part of Converse.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation, either version 3 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/>.
+
+table! {
+    posts (id) {
+        id -> Int4,
+        thread_id -> Int4,
+        body -> Text,
+        posted -> Timestamptz,
+        user_id -> Int4,
+    }
+}
+
+table! {
+    threads (id) {
+        id -> Int4,
+        title -> Varchar,
+        posted -> Timestamptz,
+        sticky -> Bool,
+        user_id -> Int4,
+        closed -> Bool,
+    }
+}
+
+table! {
+    users (id) {
+        id -> Int4,
+        email -> Varchar,
+        name -> Varchar,
+        admin -> Bool,
+    }
+}
+
+// Note: Manually inserted as print-schema does not add views.
+table! {
+    simple_posts (id) {
+        id -> Int4,
+        thread_id -> Int4,
+        body -> Text,
+        posted -> Timestamptz,
+        user_id -> Int4,
+        closed -> Bool,
+        author_name -> Text,
+        author_email -> Text,
+    }
+}
+
+// Note: Manually inserted as print-schema does not add views.
+table! {
+    thread_index (thread_id) {
+        thread_id -> Int4,
+        title -> Text,
+        thread_author -> Text,
+        created -> Timestamptz,
+        sticky -> Bool,
+        closed -> Bool,
+        post_id -> Int4,
+        post_author -> Text,
+        posted -> Timestamptz,
+    }
+}
+
+joinable!(posts -> threads (thread_id));
+joinable!(posts -> users (user_id));
+joinable!(threads -> users (user_id));
+joinable!(simple_posts -> threads (thread_id));
+
+allow_tables_to_appear_in_same_query!(
+    posts,
+    threads,
+    users,
+    simple_posts,
+);