orch/cephadm: implement `ceph orch hardware` command

orch/cephadm: implement `ceph orch hardware` command

This adds a first implementation of the `ceph orch hardware` CLI.

Usage:

```
ceph orch hardware status [<hostname>] [--category <value>]
```

Omitting the `[<hostname>]` argument will generate a report for all hosts.
The default for argument `[--category]` is `summary`.

Example with `--category` :

```
+------------+-------------+-------+--------+---------+
|    HOST    |     NAME    | SPEED | STATUS |  STATE  |
+------------+-------------+-------+--------+---------+
| ceph-00001 |   eno8303   |   0   |   OK   | Enabled |
| ceph-00001 |   eno8403   |   0   |   OK   | Enabled |
| ceph-00001 | eno12399np0 | 10000 |   OK   | Enabled |
| ceph-00001 | eno12409np1 | 10000 |   OK   | Enabled |
| ceph-00001 |    bond0    | 10000 |   OK   | Enabled |
+------------+-------------+-------+--------+---------+
```

Signed-off-by: Guillaume Abrioux <gabrioux@ibm.com>