[BookManga] Add Source (#1731)

.github/summary.yaml

@@ -1 +1 @@
-total: 1214
+total: 1215

src/main/kotlin/org/koitharu/kotatsu/parsers/site/madara/en/BookManga.kt

@@ -0,0 +1,10 @@
+package org.koitharu.kotatsu.parsers.site.madara.en
+
+import org.koitharu.kotatsu.parsers.MangaLoaderContext
+import org.koitharu.kotatsu.parsers.MangaSourceParser
+import org.koitharu.kotatsu.parsers.model.MangaParserSource
+import org.koitharu.kotatsu.parsers.site.madara.MadaraParser
+
+@MangaSourceParser("BOOKMANGA", "BookManga", "en")
+internal class BookManga(context: MangaLoaderContext) :
+	MadaraParser(context, MangaParserSource.BOOKMANGA, "bookmanga.com", 20)