cleanup: move packages to top level, change vanity URL

Signed-off-by: Andrea Luzzardi <aluzzardi@gmail.com>

state/state.go

@@ -0,0 +1,46 @@
+package state
+
+// Contents of an environment serialized to a file
+type State struct {
+	// State path
+	Path string `yaml:"-"`
+
+	// Workspace path
+	Workspace string `yaml:"-"`
+
+	// Plan path
+	Plan string `yaml:"-"`
+
+	// Human-friendly environment name.
+	// A environment may have more than one name.
+	// FIXME: store multiple names?
+	Name string `yaml:"name,omitempty"`
+
+	// User Inputs
+	Inputs map[string]Input `yaml:"inputs,omitempty"`
+
+	// Computed values
+	Computed string `yaml:"-"`
+}
+
+// Cue module containing the environment plan
+// The input's top-level artifact is used as a module directory.
+func (s *State) PlanSource() Input {
+	return DirInput(s.Plan, []string{"*.cue", "cue.mod"})
+}
+
+func (s *State) SetInput(key string, value Input) error {
+	if s.Inputs == nil {
+		s.Inputs = make(map[string]Input)
+	}
+	s.Inputs[key] = value
+	return nil
+}
+
+// Remove all inputs at the given key, including sub-keys.
+// For example RemoveInputs("foo.bar") will remove all inputs
+//   at foo.bar, foo.bar.baz, etc.
+func (s *State) RemoveInputs(key string) error {
+	delete(s.Inputs, key)
+	return nil
+}