Node addn

[johnalotoski]

• As nixosModules can't be nested, adopt a namespacing of: module-*, profile-*, role-*, etc
• Update flakeModule cluster with groupFlake option for config sharing between downstream and parts repo
• Add a nixosModule module-cardano-node-group for grouped node network deploys per consuming repository
• Add a nixosModule module-block-producer which configures secrets and service config for node block producers
• Add a nixosModule profile-pre-release for mixed version group deployments
• Add a nixosModule profile-topology-simple for small group standard p2p topology deployments
• Add a nixosModule role-relay for cardano-node relays
• Add iohk-nix-ng cardano-parts option for mixed version group deployments and job usage
• Add cardanoLibNg cardano-parts option for mixed version group deployments and job usage
• Add topologyLib functions to support simple and custom topology declarations
• Add hydraJobs to the flake template for consuming repositories
• Utilize sops age for per block producer secrets; prefer KMS for full cluster secrets when available
• Refactor basic and common modules better to support multi-infra providers and multi-secrets methods
• Refactor entrypoints and jobs for selection of release (default), pre-release (aka "-ng" or next-gen) and shell bins
• Filter testnet env from cardanoLib until removed upstream to avoid deprecation warns on eval
• Improvements made to shell menus: use cli cmd instead of pkg name, sort the menu, fix some versioning info
• Update .envrc to load ~/.age/credentials for sops usage if this file exists and the age key file is not already declared