Silent exits when providing invalid inventory or catalog files

[carl-baillargeon]

When providing an invalid inventory or catalog file in ANTA CLI, the program exits silently without any error messages or exceptions.

This can be reproduced with:

1. An invalid inventory file:

anta_inventory:
  - host: 172.20.20.101
    name: DC1-SPINE1
    tags: ["SPINE", "DC1"]

2. Or an invalid catalog file:

- anta.tests.aaa:
  - VerifyTacacsSourceIntf:
      intf: Management0
      vrf: default
      filters:
        tags: ["BL"]

Suggested fix is to improve exception handling in:

• https://github.com/aristanetworks/anta/blob/v1.2.0/anta/cli/utils.py#L246
• https://github.com/aristanetworks/anta/blob/v1.2.0/anta/cli/utils.py#L323