COMPATIBILITY: update for Ember 5, add FE tests, fix BE tests, add linting config & Github workflow

.eslintrc.cjs

@@ -0,0 +1 @@
+module.exports = require("@discourse/lint-configs/eslint");

.github/workflows/discourse-plugin.yml

@@ -0,0 +1,11 @@
+name: Discourse Plugin
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  ci:
+    uses: discourse/.github/.github/workflows/discourse-plugin.yml@v1

.gitignore

@@ -0,0 +1,3 @@
+*.swp
+gems/
+node_modules

.prettierrc.cjs

@@ -0,0 +1 @@
+module.exports = require("@discourse/lint-configs/prettier");

.rubocop.yml

@@ -0,0 +1,5 @@
+inherit_gem:
+  rubocop-discourse: stree-compat.yml
+RSpec/NamedSubject:
+  Enabled: false
+

Gemfile

@@ -0,0 +1,9 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+group :development do
+  gem "rubocop-discourse"
+  gem "syntax_tree"
+end
+

Gemfile.lock

@@ -0,0 +1,54 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    ast (2.4.2)
+    json (2.7.1)
+    language_server-protocol (3.17.0.3)
+    parallel (1.24.0)
+    parser (3.3.0.5)
+      ast (~> 2.4.1)
+      racc
+    prettier_print (1.2.1)
+    racc (1.7.3)
+    rainbow (3.1.1)
+    regexp_parser (2.9.0)
+    rexml (3.2.6)
+    rubocop (1.60.2)
+      json (~> 2.3)
+      language_server-protocol (>= 3.17.0)
+      parallel (~> 1.10)
+      parser (>= 3.3.0.2)
+      rainbow (>= 2.2.2, < 4.0)
+      regexp_parser (>= 1.8, < 3.0)
+      rexml (>= 3.2.5, < 4.0)
+      rubocop-ast (>= 1.30.0, < 2.0)
+      ruby-progressbar (~> 1.7)
+      unicode-display_width (>= 2.4.0, < 3.0)
+    rubocop-ast (1.30.0)
+      parser (>= 3.2.1.0)
+    rubocop-capybara (2.20.0)
+      rubocop (~> 1.41)
+    rubocop-discourse (3.6.0)
+      rubocop (>= 1.59.0)
+      rubocop-rspec (>= 2.25.0)
+    rubocop-factory_bot (2.25.1)
+      rubocop (~> 1.41)
+    rubocop-rspec (2.26.1)
+      rubocop (~> 1.40)
+      rubocop-capybara (~> 2.17)
+      rubocop-factory_bot (~> 2.22)
+    ruby-progressbar (1.13.0)
+    syntax_tree (6.2.0)
+      prettier_print (>= 1.2.0)
+    unicode-display_width (2.5.0)
+
+PLATFORMS
+  ruby
+  x86_64-linux
+
+DEPENDENCIES
+  rubocop-discourse
+  syntax_tree
+
+BUNDLED WITH
+   2.5.3

assets/javascripts/discourse/connectors/above-footer/emoji-picker-wrapper.js

@@ -0,0 +1,20 @@
+import { getOwner } from "@ember/application";
+
+export default {
+  setupComponent(args, component) {
+    const retort = getOwner(this).lookup("service:retort");
+    retort.setPicker(component);
+
+    const controller = getOwner(this).lookup("controller:topic");
+    controller.set("renderRetortPicker", false);
+
+    component.set("renderRetortPicker", controller.get("renderRetortPicker"));
+
+    controller.addObserver("renderRetortPicker", () => {
+      if (this._state === "destroying") {
+        return;
+      }
+      component.set("renderRetortPicker", controller.get("renderRetortPicker"));
+    });
+  },
+};