✨(backend) Import of documents

We can now import documents in formats .docx and .md.
To do so we added a new container "docspec", which
uses the docspec service to convert
these formats to Blocknote format.

More here: #1567 #1569.

compose.yml

@@ -217,3 +217,8 @@ services:
       kc_postgresql:
         condition: service_healthy
         restart: true
+
+  docspec:
+    image: ghcr.io/docspecio/api:2.0.0
+    ports:
+      - "4000:4000"