* move encoding.ts to common for #79275

* load iconv-lite-umd and jschardet in web version for #79275

* move EncodingOracle to the AbstractTextFileService for #79275

* review

* update to new iconv-lite-umd

* add workaround for jschardet types

* fix indentation

* add iconv-lite-umd and jschardet to workbench.html

* fix paths for modules
Co-authored-by: NBenjamin Pasero <benjpas@microsoft.com>