Add super error fixtures

Author: mediremi

tests/build_tests/super_errors/expected/variant_tag_overlaps_with_field.res.expected

@@ -0,0 +1,10 @@
+
+  We've found a bug for you!
+  /.../fixtures/variant_tag_overlaps_with_field.res:2:15-33
+
+  1 │ @tag("name")
+  2 │ type animal = Cat({name: string})
+  3 │ 
+  4 │ let cat = Cat({name: "my cat"})
+
+  Constructor Cat: the @tag name "name" conflicts with inline record field "name". Use a different @tag name or rename the field.

tests/build_tests/super_errors/expected/variant_tag_overlaps_with_field_as.res.expected

@@ -0,0 +1,10 @@
+
+  We've found a bug for you!
+  /.../fixtures/variant_tag_overlaps_with_field_as.res:2:15-48
+
+  1 │ @tag("name")
+  2 │ type animal = Cat({@as("name") catName: string})
+  3 │ 
+  4 │ let cat = Cat({catName: "my cat"})
+
+  Constructor Cat: the @tag name "name" conflicts with inline record field "name". Use a different @tag name or rename the field.

tests/build_tests/super_errors/fixtures/variant_tag_overlaps_with_field.res

@@ -0,0 +1,4 @@
+@tag("name")
+type animal = Cat({name: string})
+
+let cat = Cat({name: "my cat"})

tests/build_tests/super_errors/fixtures/variant_tag_overlaps_with_field_as.res

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+@tag("name")
+type animal = Cat({@as("name") catName: string})
+
+let cat = Cat({catName: "my cat"})