Add migration script for character sec status

eos/db/migrations/upgrade23.py

@@ -0,0 +1,14 @@
+"""
+Migration 23
+
+- Adds a sec status field to the character table
+"""
+import sqlalchemy
+
+
+def upgrade(saveddata_engine):
+    try:
+        saveddata_engine.execute("SELECT secStatus FROM characters LIMIT 1")
+    except sqlalchemy.exc.DatabaseError:
+        saveddata_engine.execute("ALTER TABLE characters ADD COLUMN secStatus FLOAT;")
+