uik: add basic CRUD operations

[mastercactapus]

Description:
Adds setting and reading config for universal integration keys persisted in the DB.

Out of Scope:

• Thorough validation of lengths and Expr expressions will be done in the next PR
• Dedup and suppression windows will be added later

Describe any introduced API changes:

• Integration keys now have a config field
• updateKeyConfig mutation can now update the configuration of a universal integration key

Additional Info:
Use make start EXPERIMENTAL=univ-keys

Example queries:

query GET{
  integrationKey(id:"0924bdd6-da07-44b8-a4dc-0c8dffdb43d1"){
      id
      name
    type
      config {
        stopAtFirstRule
        suppressionWindows{start}
        rules{name}
        defaultActions{dest{type}}
      }
    }
  
}

mutation SET {
  updateKeyConfig(input:{
    keyID: "0924bdd6-da07-44b8-a4dc-0c8dffdb43d1",
    
    stopAtFirstRule: false
  })
}

Note: you will need to manually set the type of the key to universal in the db