feat: add database session dependency for FastAPI routes

- Introduced a new dependency in `middleware/dependencies.py` to provide an asynchronous database session using SQLModel.
- This dependency can be utilized in route functions to facilitate database operations.

.idea/material_theme_project_new.xml

@@ -1,17 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="MaterialThemeProjectNewConfig">
-    <option name="metadata">
-      <MTProjectMetadataState>
-        <option name="migrated" value="true" />
-        <option name="pristineConfig" value="false" />
-        <option name="userId" value="4dc9a07a:18f958e7499:-7ffe" />
-      </MTProjectMetadataState>
-    </option>
-    <option name="titleBarState">
-      <MTProjectTitleBarConfigState>
-        <option name="overrideColor" value="false" />
-      </MTProjectTitleBarConfigState>
-    </option>
-  </component>
-</project>