Add collectives-westend and glutton-westend runtimes (#2024)

Add collectives and glutton parachain westend runtimes to prepare for
#1737.

The removal of system parachain native runtimes #1737 is blocked until
chainspecs and runtime APIs can be dealt with cleanly (merge of #1256
and follow up PRs).

In the meantime, these additions are ready to be merged to `master`, so
I have separated them out into this PR.

Also marked `bridge-hub-westend` as unimplemented in line with [this
issue](https://github.com/paritytech/parity-bridges-common/issues/2602).

TODO
- [x] add to `command-bot` benchmarks
- [x] add to `command-bot-scripts` benchmarks
- [x] generate weights

---------

Co-authored-by: joe petrowski <25483142+joepetrowski@users.noreply.github.com>
Co-authored-by: Muharem <ismailov.m.h@gmail.com>
Co-authored-by: command-bot <>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Branislav Kontur <bkontur@gmail.com>

.github/workflows/build-and-attach-release-runtimes.yml

@@ -19,6 +19,8 @@ jobs:
           - { name: asset-hub-westend, package: asset-hub-westend-runtime, path: cumulus/parachains/runtimes/assets/asset-hub-westend }
           - { name: bridge-hub-rococo, package: bridge-hub-rococo-runtime, path: cumulus/parachains/runtimes/bridge-hubs/bridge-hub-rococo }
           - { name: contracts-rococo, package: contracts-rococo-runtime, path: cumulus/parachains/runtimes/contracts/contracts-rococo }
+          - { name: collectives-westend, package: collectives-westend-runtime, path: cumulus/parachains/runtimes/collectives/collectives-westend }
+          - { name: glutton-westend, package: glutton-westend-runtime, path: cumulus/parachains/runtimes/glutton/glutton-westend }
         build_config:
           # Release build has logging disabled and no dev features
           - { type: on-chain-release, opts: --features on-chain-release-build }