new: add pkh put, a native dput replacement for PPA uploads

Upload built source packages over SFTP with host-key verification
(Launchpad fingerprints pinned in host_keys.yml, ask-to-accept
otherwise), Launchpad account discovery (git config lp.user), and
pre-flight checks the upload queue itself never does: changes file
discovery/validation, PPA existence via the Launchpad API, target
series validity, and debian/control Section validity (sections
bundled in distro_info.yml). Upload log prevents duplicate uploads
unless --force.

src/lib.rs

@@ -16,6 +16,8 @@ pub mod deb;
 pub mod debian;
 /// Obtain general information about distribution, series, etc
 pub mod distro_info;
+/// Launchpad integration: PPA upload targets and account discovery
+pub mod launchpad;
 /// Scaffold a new Debian source package (`pkh new`)
 pub mod new;
 /// Obtain information about one or multiple packages
@@ -24,6 +26,8 @@ pub mod package_info;
 pub mod prune;
 /// Download a source package locally
 pub mod pull;
+/// Upload a built source package to a PPA (or archive)
+pub mod put;
 /// Handle package-specific quirks and workarounds
 pub mod quirks;