Add new files and make code improvements

include/db/postgrest.conf

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+# postgrest.conf
+
+# The standard connection URI format, documented at
+# https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING
+db-uri       = "postgres://postgres:4ud1t0rf4lt4$$@localhost:5432/paad_pruebas"
+
+# The database role to use when no client authentication is provided.
+# Should differ from authenticator
+db-anon-role = "postgres"
+
+# The secret to verify the JWT for authenticated requests with.
+# Needs to be 32 characters minimum.
+jwt-secret           = "reallyreallyreallyreallyverysafe"
+jwt-secret-is-base64 = false
+
+# Port the postgrest process is listening on for http requests
+server-port = 3000
+
+# the location root is /api 
+server-host = "*"