feat: add text zoom to file browser

feat: add file browser main loop

feat: add gui list commands for scrolling and clicking items

feat: add initial window

feat: add list container selected index, padding and colors

docs: add device mount documentation

feat: add mime type options

fix: endif comment out name of if

feat: add extern device access

refactor: make fileaccess state from union

feat: add temp file access

feat: add copy and move operations for local filesystem

refactor: do not use dynamic allocation where not needed

feat: add directory list

fix: some file access function types

feat: add file execute process

feat: add local file access functions

fix: add include guards to path

refactor: fix inconsistency in file access function definitions

feat: add structure for dynamic file access