Add ssl config

.gitignore

 .env
+*.csr
+*.key

ssl.cnf

+[req]
+default_bits = 3072 
+prompt = no
+encrypt_key = no
+default_md = sha512 
+distinguished_name = dn
+
+[dn]
+C = BE
+L = Louvain-la-Neuve
+O = Universite catholique de Louvain
+CN = languagelab.sipr.ucl.ac.be