Add MangaDex login

app/src/main/java/exh/util/OkHttpUtil.kt

@@ -0,0 +1,31 @@
+package exh.util
+
+import com.elvishew.xlog.XLog
+import eu.kanade.tachiyomi.util.asJsoup
+import okhttp3.Response
+import okhttp3.ResponseBody
+import org.jsoup.nodes.Document
+
+fun Response.interceptAsHtml(block: (Document) -> Unit): Response {
+    val body = body()
+    if(body != null) {
+        if (body.contentType()?.type() == "text"
+                && body.contentType()?.subtype() == "html") {
+            val bodyString = body.string()
+            val rebuiltResponse = newBuilder()
+                    .body(ResponseBody.create(body.contentType(), bodyString))
+                    .build()
+            try {
+                // Search for captcha
+                val parsed = asJsoup(html = bodyString)
+                block(parsed)
+            } catch (t: Throwable) {
+                // Ignore all errors
+                XLog.w("Interception error!", t)
+            }
+
+            return rebuiltResponse
+        }
+    }
+    return this
+}