Add FOSSA license notice and config file

Signed-off-by: Michael Mayer <michael@liquidbytes.net>

.fossa.yml

@@ -0,0 +1,18 @@
+# Generated by FOSSA CLI (https://github.com/fossas/fossa-cli)
+# Visit https://fossa.com to learn more
+
+version: 2
+cli:
+  server: https://app.fossa.com
+  fetcher: custom
+  project: git@github.com:photoprism/photoprism.git
+analyze:
+  modules:
+  - name: github.com/photoprism/photoprism/cmd/photoprism
+    type: go
+    target: github.com/photoprism/photoprism/cmd/photoprism
+    path: cmd/photoprism
+  - name: frontend
+    type: npm
+    target: frontend
+    path: frontend