v1.2: Add accepted CSV datatypes

[maryamsulemani97]

As of v1.2, Meilisearch accepts Boolean data types.

To do

• Update CSV documentation to include all accpeted datatypes: integer, strings, and Booleans

References:

• Issues on engine repo: Add boolean support for csv documents meilisearch#3576, text/csv bulk insert endpoint does not support booleans meilisearch#3572
• Spec: CSV Content-Type — Add support for the boolean type in CSV specifications#228
• SME: @irevoire

[maryamsulemani97]

fixed in #2416