add source Scans 4u "ar" (#4732)

* add source Scans 4u "ar"

* Update build.gradle

src/ar/scans4u/build.gradle

@@ -0,0 +1,10 @@
+ext {
+    extName = 'Scans 4u'
+    extClass = '.Scans4u'
+    themePkg = 'keyoapp'
+    baseUrl = 'https://4uscans.com'
+    overrideVersionCode = 0
+    isNsfw = false
+}
+
+apply from: "$rootDir/common.gradle"

src/ar/scans4u/src/eu/kanade/tachiyomi/extension/ar/scans4u/Scans4u.kt

@@ -0,0 +1,5 @@
+package eu.kanade.tachiyomi.extension.ar.scans4u
+
+import eu.kanade.tachiyomi.multisrc.keyoapp.Keyoapp
+
+class Scans4u : Keyoapp("Scans 4u", "https://4uscans.com", "ar")