Goal: 

• List modules and their streams for snapshotted repositories

Acceptance Criteria:

• Image builder will provide a list of red hat or custom snapshot UUIDs,  
• We should return a list of modules,  along with the full set of streams available, and which is the default
• Optionally it can provide a list of packages, and if so, we will only return module streams that include those packages.
• Should include pagination and searching by module name

• an api:
• POST /snapshots/module_streams/search

with input:

{
   uuids: ["abcde"],
   package_names: ["foo", "bar"],
   search: <optional - module_name>
}

and return a list of modules with their streams and profiles:

{
 data: [
     {
        module_name: "postgresql",
        streams: [
           {
             name: "postgreql"
             stream: "14",
             profiles: {
               common: ["pkg1", "pkg2"],
               client: ["pkg3", "pkg4"]
             }
            },
           {
             name: "postgresql"
             stream: "13"
             profiles: {
                 common: ["pkg1", "pkg2"],
                 client: ["pkg3", "pkg4"]
             }
           }
        ]      
     }
 ]
  
}

This should include pagination

This should include name filter (name=postgresql)

Within pulp:

This data is stored in the rpm_modulemd table
The default is stored in the rpm_modulemddefaults table
The package join information is stored in the rpm_modulemd_packages table.