feat(zeebe-plugin): persist endpoints and deployment config separately

[pinussilvestrus]

Create separate config places for per-file deployment configuration and zeebe endpoints.

Closes #190

[barmac]

I just tested this and it seems we save some excess data. See my configuration:

  "zeebeEndpoints": [
    {
      "audience": "2HyJ1Fzkl5m8JjvEo3PYV6RAonIX8atx.zeebe.camunda.io",
      "camundaCloudClientId": "2HyJ1Fzkl5m8JjvEo3PYV6RAonIX8atx",
      "camundaCloudClientSecret": "REDACTED BY MACIEJ, BUT THERE WAS A SECRET",
      "camundaCloudClusterId": "a04ae7d0-0159-4872-9bb5-540ad31fa324",
      "connectionMethod": "oauth",
      "id": "0acnsjn",
      "oauthClientId": "2HyJ1Fzkl5m8JjvEo3PYV6RAonIX8atx",
      "oauthClientSecret": "REDACTED BY MACIEJ, BUT THERE WAS A SECRET",
      "oauthURL": "https://login.cloud.camunda.io/oauth/token",
      "rememberCredentials": true,
      "zeebeContactPointOauth": "a04ae7d0-0159-4872-9bb5-540ad31fa324.zeebe.camunda.io:443",
      "zeebeContactpointSelfHosted": "0.0.0.0:26500"
    },
    {
      "audience": "",
      "camundaCloudClusterId": "",
      "connectionMethod": "selfHosted",
      "id": "0ow80ro",
      "oauthURL": "",
      "rememberCredentials": false,
      "zeebeContactPointOauth": "",
      "zeebeContactpointSelfHosted": "0.0.0.0:26500"
    },
    {
      "audience": "",
      "camundaCloudClientId": "2HyJ1Fzkl5m8JjvEo3PYV6RAonIX8atx",
      "camundaCloudClientSecret": "REDACTED BY MACIEJ, BUT THERE WAS A SECRET",
      "camundaCloudClusterId": "a04ae7d0-0159-4872-9bb5-540ad31fa324",
      "connectionMethod": "camundaCloud",
      "id": "0913u4d",
      "oauthClientId": "",
      "oauthClientSecret": "",
      "oauthURL": "",
      "rememberCredentials": true,
      "zeebeContactPointOauth": "",
      "zeebeContactpointSelfHosted": "0.0.0.0:26500"
    },
    {
      "audience": "2HyJ1Fzkl5m8JjvEo3PYV6RAonIX8atx.zeebe.camunda.io",
      "camundaCloudClusterId": "",
      "connectionMethod": "oauth",
      "id": "1wcd6gw",
      "oauthURL": "https://login.cloud.camunda.io/oauth/token",
      "rememberCredentials": false,
      "zeebeContactPointOauth": "a04ae7d0-0159-4872-9bb5-540ad31fa324.zeebe.camunda.io:443",
      "zeebeContactpointSelfHosted": "0.0.0.0:26500"
    }
  ]

[barmac]

So in the first case the config contains both OAuth and Camunda Cloud secrets. Also, the zeebeContactPointSelfHosted is always saved.

[pinussilvestrus]

I see. That's because we save the whole endpoint configuration no matter which connection type is chosen. That's not particularly an issue that comes with this PR, right? (cf. original state)

Would it be the expected behavior that I only save the endpoint configuration of the chosen connection type? If yes, we can fix that with that PR as well or simply open another issue for that.

[barmac]

So I'd expect that we save only a single endpoint configuration, which is its method and its data, but no other endpoint's data. I'm OK with if you open another issue, just let me know.

[pinussilvestrus]

Let's open another issue for that and handle that separately.