Snapshots create and apply draft

# Create snapshorts

## Create sharder snapshots
Use sharder1 on mainnet as an example, we need to stop both the sharder and postgres docker containers first. Then find all the data folders, compress them and upload to the snapshots server.

get data in `/var/0chain/sharder/ssd` folder and compress:
```sh
tar -czvf sharder-ssd.tar.gz /var/0chain/sharder/ssd/docker.local/data

# upload the ssharder-ssd.tar.gz to snapshots server
```

get data in `/var/0chain/sharder/hdd` folder and compress:
```sh
tar -czvf sharder-hdd.tar.gz /var/0chain/sharder/hdd/docker.local/sharder1/data

# upload the sharder-hdd.tar.gz to snapshots server
```

# Create miner snapshot

Stop the miner docker container, then compress the data folder:

```sh
tar -czvf miner-ssd.tar.gz /var/0chain/miner/ssd/docker.local/miner1/data

# upload the miner-ssd.tar.gz to snapshots server
```

# Apply snapshots
## Sharder

The first step is ensure both sharder and postgres are not running, stop them otherwise.

Download the snapshots from the snapshots server, get both `sharder-ssd.tar.gz` and `sharder-hdd.tar.gz` . Suppose the sharder has the same folder structure, before applying the snapshots, please backup the existing data if any.

Extract the ssd sharder data

```sh
tar -xzvf sharder-ssd.tar.gz -C /var/0chain/sharder/ssd/docker.local/sharder1/data/
```

Extract the hdd sharder data

```sh
tar -xzvf sharder-hdd.tar.gz -C /var/0chain/sharder/hdd/docker.local/sharder1/data/
```

Once extracted, we can start the sharder and postgres docker containers.

### Miner
Stop the miner and redis if they are running. There are 2 redis instances, `miner*_redis_1` and `miner*_redis_txns_1`. So make sure they are both stopped.

Download the snapshot from server.
Backup the data if any.

Extract the snapshot to the miner's data folder, for our miner server, we can do:
```sh
tar -xzvf miner-ssd.tar.gz -C /var/0chain/miner/ssd/docker.local/miner1/data/
```

Start the miner and redis containers

El issue describe la creación y aplicación de snapshots para nodos sharder y miner. Comience examinando la estructura del repositorio para localizar scripts existentes en el proyecto zcnwebappscripts. Busque cualquier script relacionado en la base de código que maneje comandos de docker o copias de seguridad de datos. Verifique las rutas de carpeta mencionadas (/var/0chain/sharder/ssd, etc.) con la documentación o archivos de configuración del proyecto. La tarea es documentar estos pasos, así que asegúrese de que la documentación final se coloque en una ubicación apropiada, como un archivo README o una carpeta docs.

Escrito por el modelo de indexación a partir del texto del issue.