[STORY-443] Add flag --no-letsencrypt when creating a domain

[leo-scalingo]

• Add a changelog entry in the section "To Be Released" of CHANGELOG.md

Add:

scalingo domains-add mydomain.example.com --no-letsencrypt

[notion-workspace]

Add ability to completely disable Let’s Encrypt when creating a Domain

[leo-scalingo]

+-----------------------+---------+-------------+---------------------------+
|        DOMAIN         | TLS/SSL | TLS SUBJECT | LET'S ENCRYPT CERTIFICATE |
+-----------------------+---------+-------------+---------------------------+
| one-off-2.example.com | -       |             | Disabled                  |
| one-off.example.com   | -       |             | Pending DNS               |
+-----------------------+---------+-------------+---------------------------+

+----------------------------------------+--------------------------------+----------------------------+---------------------------+
|                 DOMAIN                 |            TLS/SSL             |        TLS SUBJECT         | LET'S ENCRYPT CERTIFICATE |
+----------------------------------------+--------------------------------+----------------------------+---------------------------+
| mydomain.example.com                   | Valid until 2025-04-09         | /CN=*.mydomain.example.com | Created, Not in used      |         |
|                                        | 23:59:59 +0000 +0000           |                            |                           |
+----------------------------------------+--------------------------------+----------------------------+---------------------------+

+-------------------------+---------------+-----------------+---------------------------+
|         DOMAIN          |    TLS/SSL    |   TLS SUBJECT   | LET'S ENCRYPT CERTIFICATE |
+-------------------------+---------------+-----------------+---------------------------+
| example.com             | Let's Encrypt | /CN=example.com | Created                   |
+-------------------------+---------------+-----------------+---------------------------+

[curzolapierre]

Overall LGTM, just a typo and import to fix