Add icon to admin page sidebar

* follow up to nextcloud/server#3151

Signed-off-by: Morris Jobke <hey@morrisjobke.de>

appinfo/info.xml

@@ -12,7 +12,7 @@
 	<category>office</category>
 	<category>integration</category>
 	<dependencies>
-		<nextcloud min-version="11" max-version="11" />
+		<nextcloud min-version="12" max-version="12" />
 	</dependencies>
 	<documentation>
 		<admin>https://nextcloud.com/collaboraonline/</admin>

img/app-dark.svg

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg xmlns="http://www.w3.org/2000/svg" height="32" width="32" version="1.0" viewBox="0 0 32 32">
+ <path style="color:#000000;block-progression:tb;text-transform:none;text-indent:0" fill="#000" d="m4.6992 2.004c-0.395 0.0764-0.7062 0.4666-0.6992 0.875v26.244c0 0.46 0.4122 0.876 0.8632 0.876h22.276c0.452 0 0.864-0.416 0.864-0.876v-20.284c-0.008-0.1338-0.046-0.266-0.11-0.383l-6.624-6.3984c-0.086-0.0328-0.178-0.051-0.27-0.0546h-16.137c-0.0532-0.0053-0.11-0.0053-0.1636 0zm3.3008 3.996h12v2h-12v-2zm0 6h10v2h-10v-2zm0 6h16v2h-16v-2zm0 6h8v2h-8v-2z"/>
+</svg>

lib/Settings/Section.php

@@ -24,16 +24,22 @@
 namespace OCA\Richdocuments\Settings;
 
 use OCP\IL10N;
-use OCP\Settings\ISection;
+use OCP\IURLGenerator;
+use OCP\Settings\IIconSection;
 
-class Section implements ISection {
+class Section implements IIconSection {
 	/** @var IL10N */
 	private $l;
+	/** @var IURLGenerator */
+	private $url;
+
 	/**
 	 * @param IL10N $l
+	 * @param IURLGenerator $url
 	 */
-	public function __construct(IL10N $l) {
+	public function __construct(IL10N $l, IURLGenerator $url) {
 		$this->l = $l;
+		$this->url = $url;
 	}
 	/**
 	 * {@inheritdoc}
@@ -53,4 +59,11 @@ class Section implements ISection {
 	public function getPriority() {
 		return 75;
 	}
+
+	/**
+	 * {@inheritdoc}
+	 */
+	public function getIcon() {
+		return $this->url->imagePath('richdocuments', 'app-dark.svg');
+	}
 }