Reorganise logging process in projector.sh and make-release.sh script

[vzhukovs]

Reorganise logging process in projector.sh and make-release.sh script by adding alias functions to make code more readable in context of calling debug calls.

So instead of calling:

.log 0|3|4|6|7 "Output message"

introduced new functions:

log:emerg "Message"
log:err "Message"
log:warning "Message"
log:info "Message"
log:debug "Message"

fixes eclipse-che/che#20312
inspired by #48 (review)

Signed-off-by: Vladyslav Zhukovskyi [email protected]

[benoitf]

thanks 👍