Changed the names of the files to conform the python convection and also added photo_in_entry.py to diminish the cyclic import error in pylint

src/pilgrim/database.py

@@ -0,0 +1,21 @@
+from sqlalchemy import create_engine
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import sessionmaker
+
+Base = declarative_base()
+
+
+class Database:
+    def __init__(self):
+        self.engine = create_engine(
+            "sqlite:///database.db",
+            echo=False,
+            connect_args={"check_same_thread": False},
+        )
+        self.session = sessionmaker(bind=self.engine, autoflush=False, autocommit=False)
+
+    def create(self):
+        Base.metadata.create_all(self.engine)
+
+    def get_db(self):
+        return self.session()