Base / Common class properties/types

[glisignoli]

Class types are created individually, even though they share a lot of common properties.

Eg:

export class RPMRepositoryType {
  autopublish?: boolean;
  checksum_type?: 'sha1' | 'sha256' | 'sha512';
  description: string | null;
  gpgcheck?: 0 | 1 | 2;
  latest_version_href?: string;
  metadata_signing_service?: string;
  name: string;
  pulp_created?: string;
  pulp_href?: string;
  pulp_labels: Record<string, string>;
  pulp_last_updated?: string;
  remote: string | null;
  repoclosure_verification?: boolean;
  repo_gpgcheck?: 0 | 1;
  retain_package_versions?: number;
  retain_repo_versions: number | null;
  versions_href?: string;
}

export class FileRepositoryType {
  autopublish?: boolean;
  description: string | null;
  latest_version_href?: string;
  manifest?: string;
  name: string;
  prn?: string;
  pulp_created?: string;
  pulp_href?: string;
  pulp_labels: Record<string, string>;
  pulp_last_updated?: string;
  remote: string | null;
  retain_repo_versions: number;
  versions_href?: string;
}

A parent class type for each pulp base type (remote, content, repository, distribution, publication), could be created to remove the duplication between these classes.