* JS: Add textbox module
* Using view_holder instead of view_dispatcher, more checks in js_textbox_show
* API version sync
* Rename emptyText() to clearText()
* Keeping view_holder allocated for thread sefety
* Js: proper comparision with 0 in js_math_sign
* Js: add comments and fix condition race in textbox
Co-authored-by: あく <alleteam@gmail.com>
Co-authored-by: nminaylov <nm29719@gmail.com>
