indents(sql): initial support (#4857)

* indents(sql): initial support

* indents(sql): fix queries and lua style

tests/indent/sql/case.sql

@@ -0,0 +1,8 @@
+select
+    case
+        when a = 1 then '1'
+        when a = 2 then '2'
+        when a = 3 then '3'
+        else '0'
+    end as stmt1
+from tab;

tests/indent/sql/compound.sql

@@ -0,0 +1,3 @@
+begin
+    create table foo (bar int);
+end;

tests/indent/sql/create.sql

@@ -0,0 +1,4 @@
+create table my_table (
+    id bigint,
+    date date
+);

tests/indent/sql/cte.sql

@@ -0,0 +1,7 @@
+with data as (
+    select
+        a,
+        b
+    from tab
+)
+select * from data;

tests/indent/sql/insert.sql

@@ -0,0 +1,5 @@
+insert into mytable
+    (column1, column2)
+values
+    ('john', 123),
+    ('jane', 124);

tests/indent/sql/select.sql

@@ -0,0 +1,4 @@
+select
+    a,
+    b
+from tab;

tests/indent/sql/subquery.sql

@@ -0,0 +1,9 @@
+select
+    id
+from foo
+where id < (
+    select
+        id
+    from bar
+    limit 1
+);