Normalize topic name

[gaetancollaud]

Option to "normalize" the topic name.

• keep all letters and numbers
• replace spaces with _
• replace '/' with '_'
• remove special char

[dylancollaud]

Add Environnement variable to change Topic name by the ID of the device

[gaetancollaud]

Add Environnement variable to change Topic name by the ID of the device

created #5 because it's not related to the normalization of the special chars.