receive multipart doc. from clients and upload file to Supabase storage
Content-Type:multipart/form-data
//file part
doc: png/jpg/pdf/doc
as example file ”HELLO.pdf” we will have in bucket “documents” with path “/{trip_id}/{doc_name}
and then we also store real doc_name in DB and new path
#overide: we will overide if uploaded file had a same name
we expect that in application user will got warning when they upload with same name since they know list of exist file