Add an option to configure S3 repository to store snapshots out of the box

[t0x01]

Description

The aim of this PR is to add an ability to configure S3 repository to store snapshots out of the box. It adds an option to install OpenSearch 'repository-s3' plugin, when building a wazuh-indexer image, and 2 optional environment variables for the S3 access keys. Tested on version 4.7.2.

Example of changes to single-node/config/wazuh_indexer/wazuh.indexer.yml:

...
s3.client.default.endpoint: minio:9000
s3.client.default.protocol: http
s3.client.default.max_retries: 3
s3.client.default.read_timeout: 50s
s3.client.default.path_style_access: true
s3.client.default.use_throttle_retries: true

Example of changes to single-node/docker-compose.yml:

...
  wazuh.indexer:
    ...
    environment:
      ...
      - "S3_ACCESS_KEY_ID=randomAccessKey"
      - "S3_SECRET_ACCESS_KEY=randomSecretAccessKey"
...

[t0x01]

Hello. Do i need to add any additional information to this PR or open an issue for it?