Update debian/meli.{docs,examples} and Cargo exclude

Signed-off-by: Manos Pitsidianakis <manos@pitsidianak.is>

debian/meli.docs

@@ -1,3 +1,4 @@
 meli/docs/*.1
 meli/docs/*.5
 meli/docs/*.7
+meli/docs/external-tools.md

debian/meli.examples

@@ -1,2 +1,3 @@
-meli/docs/samples/sample-config.toml
-meli/docs/samples/themes
+contrib/*
+meli/docs/mail.vim
+meli/docs/samples/*

meli/Cargo.toml

@@ -12,6 +12,7 @@ repository = "https://git.meli-email.org/meli/meli.git"
 keywords = ["mail", "mua", "maildir", "terminal", "imap"]
 categories = ["command-line-utilities", "email"]
 default-run = "meli"
+exclude = ["/docs/historical-manpages"]
 
 [[bin]]
 name = "meli"