fix: clap CLI definitions and manpage generation

- add #[group(skip)] to all Parser-derived structs
- fix conflicts_with and arg definitions for correct CLI behavior
- refactor bin entry points to support manpage generation

core/man/start-cli/start-cli-backup-target-cifs-update.1

@@ -0,0 +1,28 @@
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.TH start-cli-backup-target-cifs-update 1  "update " 
+.SH NAME
+start\-cli\-backup\-target\-cifs\-update \- Update an existing backup target
+.SH SYNOPSIS
+\fBstart\-cli backup target cifs update\fR [\fB\-h\fR|\fB\-\-help\fR] <\fIID\fR> <\fIHOSTNAME\fR> <\fIPATH\fR> <\fIUSERNAME\fR> [\fIPASSWORD\fR] 
+.SH DESCRIPTION
+Update an existing backup target
+.SH OPTIONS
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+Print help
+.TP
+<\fIID\fR>
+Backup target identifier
+.TP
+<\fIHOSTNAME\fR>
+CIFS server hostname
+.TP
+<\fIPATH\fR>
+Path on the CIFS share
+.TP
+<\fIUSERNAME\fR>
+CIFS authentication username
+.TP
+[\fIPASSWORD\fR]
+CIFS authentication password