feature/1109 grpc session model (#1141)

- **feat: remove Hway deployment**
- **feat: introduce session middleware for requests**
- **refactor: update path imports to use new pkg folder**
- **feat: add gRPC client for interacting with services**
- **feat: remove grpc client and use REST api**
- **refactor: move  from  to**
- **feat: add client views endpoint**
- **feat: add webauthn support**
- **closes: #1124**
- **refactor: Improve PR labeler configuration**
- **feat: add milestone discussion template**
- **feat: remove OKR tracking issue template**
- **feat: use gorilla sessions for session management**
- **refactor: move pubkey related code to**
- **<no value>**
- **refactor: remove unused identifier type**
- **feat: integrate Macaroon Keeper with Service Module**
- **refactor: rename worker routes for clarity**

internal/ctx/state.go

@@ -0,0 +1,61 @@
+package ctx
+
+import "github.com/labstack/echo/v4"
+
+type State string
+
+const (
+	StateAuthenticated      State = "authenticated"
+	StateUnauthenticated    State = "unauthenticated"
+	StatePendingCredentials State = "pending_credentials"
+	StatePendingAssertion   State = "pending_assertion"
+	StateDisabled           State = "disabled"
+	StateDisconnected       State = "disconnected"
+)
+
+func (s State) String() string {
+	return string(s)
+}
+
+func StateFromString(s string) State {
+	switch s {
+	case StateAuthenticated.String():
+		return StateAuthenticated
+	case StateUnauthenticated.String():
+		return StateUnauthenticated
+	case StatePendingCredentials.String():
+		return StatePendingCredentials
+	case StatePendingAssertion.String():
+		return StatePendingAssertion
+	case StateDisabled.String():
+		return StateDisabled
+	case StateDisconnected.String():
+		return StateDisconnected
+	default:
+		return State("")
+	}
+}
+
+func readSessionFromStore(c echo.Context, id string) (*session, error) {
+	sess, err := store.Get(c.Request(), id)
+	if err != nil {
+		return nil, err
+	}
+	return NewSessionFromValues(sess.Values), nil
+}
+
+func writeSessionToStore(
+	c echo.Context,
+	id string,
+) error {
+	sess, err := store.Get(c.Request(), id)
+	if err != nil {
+		return err
+	}
+	s := defaultSession(id, sess)
+	err = s.SaveHTTP(c)
+	if err != nil {
+		return err
+	}
+	return nil
+}