feat: Generate Debian packages with CPack (#2282)

Builds the Linux packages with CPack. 
Generate them by running Conan with `--options:host "&:package=True"
--options:host "&:static=True"` then after the build you can run `cpack
.` in the build directory.

@mathbunnyru Where do you think this should be built? QA needs a package
per-commit.

@godexsoft What to do with the `config.json` and service file. I can
just remove them or strip the comment out but it still won't work out
the box with the default `rippled.cfg`. Relates to #2191.

---------

Co-authored-by: Ayaz Salikhov <mathbunnyru@users.noreply.github.com>

.github/workflows/build.yml

@@ -85,6 +85,23 @@ jobs:
     secrets:
       CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
 
+  package:
+    name: Build packages
+
+    uses: ./.github/workflows/build_impl.yml
+    with:
+      runs_on: heavy
+      container: '{ "image": "ghcr.io/xrplf/clio-ci:8ad111655c4d04bfedb7e7cb3bbfba6d4204852d" }'
+      conan_profile: gcc
+      build_type: Release
+      disable_cache: false
+      code_coverage: false
+      static: true
+      upload_clio_server: false
+      package: true
+      targets: package
+      analyze_build_time: false
+
   check_config:
     name: Check Config Description
     needs: build-and-test