Change tenant and accounting dimensions to optional.

[mlebreuil]

Discussed in #114

^{Originally posted by jinu18 March 24, 2024}
I've thoroughly tested this plugin for a full day and find it excellent. However, attempting to modify certain features proved challenging due to the complexity of the plugin exceeding my current knowledge.

My specific requests are as follows:

Tenant and Accounting dimensions should not be mandatory fields. Accounting dimensions serve no purpose in my usage. If left unset, could their values be hidden?