feat: add files sort

docs: add makefile doxygen generate

fix: file opening throw error if nothing opened

feat: add plain text default open

fix: saving exec options

fix: text viewer wrong character

fix: path stuck

fix: rework file opening mechanism so mime is checked first

fix: browser window bugs

fix: font measure

fix: list container scroll

feat: add more columns to render

fix: loading and saving options correctly

feat: add default options, load options on startup

feat: add file executing

feat: add file executing and folder browsing

feat: add get file local path so it can be executed

feat: implement basic directory browser window

feat: add wTahoma 13

feat: add wTahoma 22 and font family wTahoma