New static configuration loading system.

Co-authored-by: Mathieu Lonjaret <mathieu.lonjaret@gmail.com>

pkg/cli/fixtures_test.go

@@ -0,0 +1,25 @@
+package cli
+
+type Yo struct {
+	Foo string `description:"Foo description"`
+	Fii string `description:"Fii description"`
+	Fuu string `description:"Fuu description"`
+	Yi  *Yi    `label:"allowEmpty"`
+	Yu  *Yi
+}
+
+func (y *Yo) SetDefaults() {
+	y.Foo = "foo"
+	y.Fii = "fii"
+}
+
+type Yi struct {
+	Foo string
+	Fii string
+	Fuu string
+}
+
+func (y *Yi) SetDefaults() {
+	y.Foo = "foo"
+	y.Fii = "fii"
+}