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-package-install.1

@@ -0,0 +1,22 @@
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.TH start-cli-package-install 1  "install " 
+.SH NAME
+start\-cli\-package\-install \- Install a package
+.SH SYNOPSIS
+\fBstart\-cli package install\fR [\fB\-s\fR|\fB\-\-sideload\fR] [\fB\-h\fR|\fB\-\-help\fR] [\fIID\fR] [\fIVERSION\fR] 
+.SH DESCRIPTION
+Install a package
+.SH OPTIONS
+.TP
+\fB\-s\fR, \fB\-\-sideload\fR
+
+.TP
+\fB\-h\fR, \fB\-\-help\fR
+Print help
+.TP
+[\fIID\fR]
+Package identifier
+.TP
+[\fIVERSION\fR]
+Version range constraint