Kibana app: Migrate ui capabilities

[flash1293]

Ui capabilities which are currently defined in legacy plugins have to be migrated to the new platform by using the core.capabilities API in the setup phase on the server:

kibana/x-pack/plugins/spaces/server/capabilities/index.ts

Line 18 in 91330d2

core.capabilities.registerProvider(capabilitiesProvider);

kibana/x-pack/plugins/spaces/server/capabilities/capabilities_provider.ts

Line 7 in 91330d2

export const capabilitiesProvider = () => ({

There are currently capabilities defined in src/legacy/core_plugins/kibana/index.js. They should be split up and moved into their respective owner plugins (discover definitions into discover plugin and so on). catalogue should be moved into the home plugin.

[elasticmachine]

Pinging @elastic/kibana-app (Team:KibanaApp)