Multisrc Readnovelfull: add boxnovel and plugins (#1656)

* base commit

* some changes

* remove pagePlugin

scripts/multisrc/readnovelfull/README.md

@@ -0,0 +1,31 @@
+# Readnovelfull multisrc generator
+
+## Compatiblity
+
+### This generator is brought over from the madara generator one folder away
+
+it should(!) work for all sites that uses this theme
+
+## Add a new source
+
+### sources.json
+
+To add a new source you need to add it to sources.json:
+
+- id: the id of the source (something unique)
+- sourceName: the name of the source (you can use the value of "name" in "https://site.com/wp-json/" if it exists)
+- sourceSite: the site url
+- options: the options of the source
+  - lang: the language of the source (default: "English") (check that the language
+   exists in the languages (check folder names in "plugins/"))
+  - versionIncrements: needs to be updated everytime the site url is updated
+  - popularPage: the href value using this CSS selector `a[title="Latest Release"]`
+  - ajax-chapter-list: if chapters are obtained from an ajax endpoint
+  - pageParam: if a site uses something other than page for accessing pages
+
+### filters
+
+To add filters to a source you need to run the script "get_filters.js" \
+(`npx node scripts/multisrc/readnovelfull/get_filters.js`
+(if you are at the root of the project) (and you have ran "npm install" before))
+and follow the instructions (url is easier and faster but sometimes it doesn't work)