add pragma autovacuum_mode to simulator

sql_generation/model/query/mod.rs

@@ -16,3 +16,4 @@ pub mod predicate;
 pub mod select;
 pub mod transaction;
 pub mod update;
+pub mod pragma;

sql_generation/model/query/pragma.rs

@@ -0,0 +1,28 @@
+use std::fmt::Display;
+
+pub enum Pragma {
+    AutoVacuumMode(VacuumMode),
+}
+
+pub enum VacuumMode {
+    None,
+    Incremental,
+    Full,
+}
+
+impl Display for Pragma {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Pragma::AutoVacuumMode(vacuum_mode) => {
+                let mode = match vacuum_mode {
+                    VacuumMode::None => "none",
+                    VacuumMode::Incremental => "incremental",
+                    VacuumMode::Full => "full",
+                };
+
+                write!(f, "PRAGMA auto_vacuum={mode} ")?;
+                Ok(())
+            }
+        }
+    }
+}