Immanuel/nnn: My build of nnn with minor changes - nnn

My build of nnn with minor changes

Arun Prakash Jana f0535dbd76 Use standard exit status everywhere		5 lat temu
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.clang-tidy	No re-filter on MSGWAIT	5 lat temu
dbg.h	Use : for filter case	5 lat temu
nnn.c	Use standard exit status everywhere	5 lat temu
nnn.h	Reduce presel usage	5 lat temu