Added the initial part of Secret Manager to manager passwords. The first
implementation is supported only plain passwords but a particular
`constructor` interface allow to implement more strict solutions in the
future. The secret manager follows the universal agent way so actual
password generation and saving is on the driver side. Single driver
`PasswordCapabilityDriver' has been added in the first implementation
that uses the PG database as a storage for passwords. An example, of
adding a password:

Request:
```curl
curl --location 'http://10.20.0.2:11010/v1/secret/passwords/' \
--header 'Content-Type: application/json' \
--header 'Authorization: Bearer <TOKEN>' \
--data '{
    "name": "my-password",
    "project_id": "c27f59fe-d3d3-4625-804c-5c9fd3bb3142",
    "method": "AUTO_HEX",
    "constructor": {
        "kind": "plain"
    }
}'

```

Response:
```curl
{
    "uuid": "985dad4b-161c-432c-8d9f-be78763df758",
    "created_at": "2025-06-25T20:39:50.095203Z",
    "updated_at": "2025-06-25T20:39:56.335798Z",
    "project_id": "c27f59fe-d3d3-4625-804c-5c9fd3bb3142",
    "name": "my-password",
    "description": "",
    "method": "AUTO_HEX",
    "status": "ACTIVE",
    "constructor": {
        "kind": "plain"
    },
    "value": "755eca35ece5bd921852c72996d1a790"
}
```

There are two supported method for generation: AUTO_HEX, AUTO_URL_SAFE

Other improvements:
- Significant fixes for the configuraiton service, integration with SDK.
- Fixes for Element Manager for integration with universal agent.
- A tiny fix for DNS for tests.

Signed-off-by: Anton Kremenetsky <anton.kremenetsky@gmail.com>