Merge and modify PR from @Kurnihil

Merging a PR from @Kurnihil into the already rebased branch.
Made some small changes to make it work with newer changes.

Some finetuning is probably still needed.

Co-authored-by: Daniele Andrei <daniele.andrei@geo-satis.com>
Co-authored-by: Kurnihil

migrations/sqlite/2023-06-02-200424_create_organization_api_key/up.sql

@@ -0,0 +1,11 @@
+CREATE TABLE organization_api_key (
+	uuid            TEXT NOT NULL,
+    org_uuid	    TEXT NOT NULL,
+    atype           INTEGER NOT NULL,
+    api_key         TEXT NOT NULL,
+	revision_date   DATETIME NOT NULL,
+	PRIMARY KEY(uuid, org_uuid),
+	FOREIGN KEY(org_uuid) REFERENCES organizations(uuid)
+);
+
+ALTER TABLE users ADD COLUMN external_id TEXT;