Update SQL engine snapshots for add time expr test

Not totally relevant to this PR, but these seem to have been removed somehow.

tests_metricflow/snapshots/test_engine_specific_rendering.py/SqlPlan/BigQuery/test_add_time_expr__plan0.sql

@@ -0,0 +1,10 @@
+test_name: test_add_time_expr
+test_filename: test_engine_specific_rendering.py
+docstring:
+  Tests rendering of the SqlAddTimeExpr in a query.
+sql_engine: BigQuery
+---
+-- Test Add Time Expression
+SELECT
+  DATE_ADD(CAST('2020-01-01' AS DATETIME), INTERVAL SqlExpressionRenderResult(sql='1', bind_parameter_set=SqlBindParameterSet(param_items=())) quarter) AS add_time
+FROM foo.bar a

tests_metricflow/snapshots/test_engine_specific_rendering.py/SqlPlan/Databricks/test_add_time_expr__plan0.sql

@@ -0,0 +1,10 @@
+test_name: test_add_time_expr
+test_filename: test_engine_specific_rendering.py
+docstring:
+  Tests rendering of the SqlAddTimeExpr in a query.
+sql_engine: Databricks
+---
+-- Test Add Time Expression
+SELECT
+  DATEADD(month, (1 * 3), '2020-01-01') AS add_time
+FROM foo.bar a

tests_metricflow/snapshots/test_engine_specific_rendering.py/SqlPlan/DuckDB/test_add_time_expr__plan0.sql

@@ -0,0 +1,10 @@
+test_name: test_add_time_expr
+test_filename: test_engine_specific_rendering.py
+docstring:
+  Tests rendering of the SqlAddTimeExpr in a query.
+sql_engine: DuckDB
+---
+-- Test Add Time Expression
+SELECT
+  '2020-01-01' + INTERVAL (1 * 3) month AS add_time
+FROM foo.bar a

tests_metricflow/snapshots/test_engine_specific_rendering.py/SqlPlan/Postgres/test_add_time_expr__plan0.sql

@@ -0,0 +1,10 @@
+test_name: test_add_time_expr
+test_filename: test_engine_specific_rendering.py
+docstring:
+  Tests rendering of the SqlAddTimeExpr in a query.
+sql_engine: Postgres
+---
+-- Test Add Time Expression
+SELECT
+  '2020-01-01' + MAKE_INTERVAL(months => (1)) AS add_time
+FROM foo.bar a

tests_metricflow/snapshots/test_engine_specific_rendering.py/SqlPlan/Redshift/test_add_time_expr__plan0.sql

@@ -0,0 +1,10 @@
+test_name: test_add_time_expr
+test_filename: test_engine_specific_rendering.py
+docstring:
+  Tests rendering of the SqlAddTimeExpr in a query.
+sql_engine: Redshift
+---
+-- Test Add Time Expression
+SELECT
+  DATEADD(month, (1 * 3), '2020-01-01') AS add_time
+FROM foo.bar a

tests_metricflow/snapshots/test_engine_specific_rendering.py/SqlPlan/Snowflake/test_add_time_expr__plan0.sql

@@ -0,0 +1,10 @@
+test_name: test_add_time_expr
+test_filename: test_engine_specific_rendering.py
+docstring:
+  Tests rendering of the SqlAddTimeExpr in a query.
+sql_engine: Snowflake
+---
+-- Test Add Time Expression
+SELECT
+  DATEADD(month, (1 * 3), '2020-01-01') AS add_time
+FROM foo.bar a

tests_metricflow/snapshots/test_engine_specific_rendering.py/SqlPlan/Trino/test_add_time_expr__plan0.sql

@@ -0,0 +1,10 @@
+test_name: test_add_time_expr
+test_filename: test_engine_specific_rendering.py
+docstring:
+  Tests rendering of the SqlAddTimeExpr in a query.
+sql_engine: Trino
+---
+-- Test Add Time Expression
+SELECT
+  DATE_ADD('month', (1), '2020-01-01') AS add_time
+FROM foo.bar a