Create a plan for implementing projects and also create the backend API. (#19)

Creates projects to organize tasks under. (Note the migration also contains the tables for creating folders for projects as well because adding foreign keys is a PITA in sqlite apparently).

Reviewed-on: #19
Co-authored-by: Drew Galbraith <drew@tiramisu.one>
Co-committed-by: Drew Galbraith <drew@tiramisu.one>

.forgejo/workflows/ci.yml

@@ -51,7 +51,9 @@ jobs:
         cargo test --locked -- --skip api
       working-directory: backend
     - name: "Integration Tests"
-      run: cargo test --locked --test api
+      run: |
+        mkdir -p reports/store
+        cargo test --locked --test api
       working-directory: backend
 
   check-frontend: