chore: workaround wit-bindgen-go bug

Rename `var::var` to `var::some` to workaround naming bug
https://github.com/bytecodealliance/wasm-tools-go/issues/215

Signed-off-by: Roman Volosatovs <rvolosatovs@riseup.net>

Author: rvolosatovs

tests/go/sync/bindings/wadge-test/sync/guest/guest.wit

@@ -4,7 +4,7 @@ interface sync {
 	flags abc { a, b, c }
 	record rec-nested { foo: string }
 	record rec { nested: rec-nested }
-	variant var { var(rec), empty }
+	variant var { some(rec), empty }
 	enum foobar { foo, bar }
 	record primitives {
 		a: u8,

tests/go/sync/bindings/wadge-test/sync/sync/abi.go

@@ -213,15 +213,15 @@ func TestIdentityVariant(t *testing.T) {
 	t.Run("var", func(t *testing.T) {
 		t.Run("empty", func(t *testing.T) {
 			wadge.RunTest(t, func() {
-				expected := sync.VarVar(sync.Rec{})
+				expected := sync.VarSome(sync.Rec{})
 				assert.Equal(t, expected,
 					sync.IdentityVariant(expected),
 				)
 			})
 		})
 		t.Run("foo", func(t *testing.T) {
 			wadge.RunTest(t, func() {
-				expected := sync.VarVar(sync.Rec{
+				expected := sync.VarSome(sync.Rec{
 					Nested: sync.RecNested{
 						Foo: "foo",
 					},
@@ -528,15 +528,15 @@ func TestIdentityListVariant(t *testing.T) {
 	})
 	t.Run("[var(empty)]", func(t *testing.T) {
 		wadge.RunTest(t, func() {
-			expected := []sync.Var{sync.VarVar(sync.Rec{})}
+			expected := []sync.Var{sync.VarSome(sync.Rec{})}
 			assert.Equal(t, expected,
 				sync.IdentityListVariant(cm.NewList(unsafe.SliceData(expected), 1)).Slice(),
 			)
 		})
 	})
 	t.Run("[var(foo)]", func(t *testing.T) {
 		wadge.RunTest(t, func() {
-			expected := []sync.Var{sync.VarVar(sync.Rec{
+			expected := []sync.Var{sync.VarSome(sync.Rec{
 				Nested: sync.RecNested{
 					Foo: "foo",
 				},
@@ -549,7 +549,7 @@ func TestIdentityListVariant(t *testing.T) {
 	t.Run("[var(foo), empty]", func(t *testing.T) {
 		wadge.RunTest(t, func() {
 			expected := []sync.Var{
-				sync.VarVar(sync.Rec{
+				sync.VarSome(sync.Rec{
 					Nested: sync.RecNested{
 						Foo: "foo",
 					},
@@ -564,19 +564,19 @@ func TestIdentityListVariant(t *testing.T) {
 	t.Run("[var(foo), empty, var(bar), var(empty), var(baz)]", func(t *testing.T) {
 		wadge.RunTest(t, func() {
 			expected := []sync.Var{
-				sync.VarVar(sync.Rec{
+				sync.VarSome(sync.Rec{
 					Nested: sync.RecNested{
 						Foo: "foo",
 					},
 				}),
 				sync.VarEmpty(),
-				sync.VarVar(sync.Rec{
+				sync.VarSome(sync.Rec{
 					Nested: sync.RecNested{
 						Foo: "bar",
 					},
 				}),
-				sync.VarVar(sync.Rec{}),
-				sync.VarVar(sync.Rec{
+				sync.VarSome(sync.Rec{}),
+				sync.VarSome(sync.Rec{
 					Nested: sync.RecNested{
 						Foo: "baz",
 					},

tests/go/sync/bindings/wadge-test/sync/sync/sync.wit.go

@@ -16,7 +16,7 @@ interface sync {
     }
 
     variant var {
-        var(rec),
+        some(rec),
         empty,
     }