[v1.5] Add a new method for creating snapshots

[brunoocasali]

⚠️ This issue is generated, it means the examples and the namings do not necessarily correspond to the language of this repository.
Also, if you are a maintainer, feel free to add any clarification and instruction about this issue.

Sorry if this is already partially/completely implemented, feel free to let me know about the state of this issue in the repo.

Related to meilisearch/integration-guides#290

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This issue is divided in two sections, first you need to make the implementation, second you must update the code-samples (no one likes a outdated docs, right?).

New implementation

Related to:

• spec: Snapshot creation on demand specifications#258
• meilisearch issue: Create snapshots on demand meilisearch#4052

Add a method createSnapshot similar to createDump() to call the newly introduced POST /snapshots route and return a task.

👉 Usage: https://www.notion.so/meilisearch/Usage-On-demand-snapshots-f105c94abb444b61a9d0f94550a5199e

Code samples:

Inside of this file: .code-samples.meilisearch.yml:

2. Create a new entry with this key create_snapshot_1: containing a call to the createSnapshot() method.

Use this as a reference if the previous description was not helpful:

create_snapshot_1: |-
  curl \
  -X POST 'http://localhost:7700/snapshots'

Todo:

• Implement the new createSnapshot method
• Update the code-samples according to this issue.