WIP sopn process diagram

ynr/apps/sopn_parsing/sopn_processing.md

@@ -0,0 +1,9 @@
+```mermaid
+graph TD
+  A[Start] --> B[Process 1 Prepare the SOPN file for upload]
+  B --> C[Process 2 If the SOPN file is in an acceptable format, then extract the pages]
+  C --> D[Process 3 Once the pages are extracted, start page matching to ensure that any tables that are split across pages are matched correctly]
+  D --> E[Process 4 If the page matching is successful, then the relevant pages are combined into a single file and uploaded to the database]
+  E --> F[Process 5 Start table extraction and parsing]
+  G --> H[End]
+```