Add new BuildUbuntu22-04.md
DocGisItemsRte: included track-to-route & some minor other changes
add new menu 'Link map views'
BuildUbuntuPROJ8: repair broken link
BuildUbuntuPROJ8: add installation to user-defined path
Ubuntu/Fedora/LinuxMintPROJ8: add some hints
Fedora/UbuntuPROJ8: update description of installation procedure
minor updates
add descriptions of Linux builds with PROJ 8