add /help command and documentation for vanilla and mod cubescript vars and commands

sauerbraten / p1xbraten

my patches on top of the official Cube 2: Sauerbraten client & server

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Open sauerbraten opened 2 years ago

sauerbraten commented 2 years ago

things that should eventually work, in order of increasing difficulty:

/help to list all idents with kind (var vs. cmd) and if var, type (string/int/float)
/help crosshaircolor to show kind, type, help text of one ident
/help crosshair* to show all idents witth that prefix
/help *color to show all idents with that suffix