feat(package): Add RPM, deb, pacman and tar packages and manpage

Build package using fpm. As I don't want ruby/gem in my computer, the
build system creates an OCI image with Podman (at this time), and
generate dist pacakges.

To enhance the packages, a manpage is now generated from the
documentation.

doc/mkdocs.yml

@@ -3,6 +3,16 @@ docs_dir: ./docs
 plugins:
   - search
   - inline-svg
+  - manpage:
+      enabled: !ENV [MANPAGE, false]
+      preprocess: preprocess.py
+      pages:
+        - title: Katenary
+          header: Katenary helm chart generator
+          output: share/man/man1/katenary.1
+          inputs:
+            - usage.md
+            - labels.md
 theme:
   name: material
   custom_dir: overrides