feat(mbql): import mbql classes in __init__

Signed-off-by: Charles Lariviere <charles@dribbble.com>

Author: Charles Lariviere

src/metabase/__init__.py

@@ -1,3 +1,30 @@
+from metabase.mbql.aggregations import (
+    Average,
+    Count,
+    CumulativeCount,
+    CumulativeSum,
+    Distinct,
+    Max,
+    Min,
+    StandardDeviation,
+    Sum,
+)
+from metabase.mbql.filter import (
+    Between,
+    CaseOption,
+    EndsWith,
+    Equal,
+    Greater,
+    GreaterEqual,
+    IsNotNull,
+    IsNull,
+    Less,
+    LessEqual,
+    NotEqual,
+    StartsWith,
+)
+from metabase.mbql.groupby import BinOption, GroupBy, TemporalOption
+from metabase.mbql.query import Query
 from metabase.metabase import Metabase
 from metabase.resources.card import Card
 from metabase.resources.database import Database