Change Connection UI (#269)

This allows the user to select different connections from the terminal
block. Some features include:
- a status bar at the top of the term block that shows your current
connection
- an icon next to the status bar that shows whether the connection is
currently connected
- the ability to click the status bar and type in a new connection in
order to change the current connection

---------

Co-authored-by: sawka <mike.sawka@gmail.com>

pkg/wshrpc/wshclient/wshclient.go

@@ -66,7 +66,7 @@ func EventSubCommand(w *wshutil.WshRpc, data wshrpc.SubscriptionRequest, opts *w
 }
 
 // command "eventunsub", wshserver.EventUnsubCommand
-func EventUnsubCommand(w *wshutil.WshRpc, data wshrpc.SubscriptionRequest, opts *wshrpc.RpcOpts) error {
+func EventUnsubCommand(w *wshutil.WshRpc, data string, opts *wshrpc.RpcOpts) error {
     _, err := sendRpcRequestCallHelper[any](w, "eventunsub", data, opts)
     return err
 }

pkg/wshrpc/wshrpctypes.go

@@ -26,6 +26,7 @@ const (
 
 const (
 	Event_BlockClose = "blockclose"
+	Event_ConnChange = "connchange"
 )
 
 const (
@@ -83,7 +84,7 @@ type WshRpcInterface interface {
 	FileReadCommand(ctx context.Context, data CommandFileData) (string, error)
 	EventPublishCommand(ctx context.Context, data WaveEvent) error
 	EventSubCommand(ctx context.Context, data SubscriptionRequest) error
-	EventUnsubCommand(ctx context.Context, data SubscriptionRequest) error
+	EventUnsubCommand(ctx context.Context, data string) error
 	EventUnsubAllCommand(ctx context.Context) error
 	StreamTestCommand(ctx context.Context) chan RespOrErrorUnion[int]
 	StreamWaveAiCommand(ctx context.Context, request OpenAiStreamRequest) chan RespOrErrorUnion[OpenAIPacketType]
@@ -324,3 +325,10 @@ type TimeSeriesData struct {
 	Ts     int64              `json:"ts"`
 	Values map[string]float64 `json:"values"`
 }
+
+type ConnStatus struct {
+	Status     string `json:"status"`
+	Connection string `json:"connection"`
+	Connected  bool   `json:"connected"`
+	Error      string `json:"error,omitempty"`
+}

pkg/wshrpc/wshserver/wshserver.go

@@ -478,7 +478,7 @@ func (ws *WshServer) EventSubCommand(ctx context.Context, data wshrpc.Subscripti
 	return nil
 }
 
-func (ws *WshServer) EventUnsubCommand(ctx context.Context, data wshrpc.SubscriptionRequest) error {
+func (ws *WshServer) EventUnsubCommand(ctx context.Context, data string) error {
 	rpcSource := wshutil.GetRpcSourceFromContext(ctx)
 	if rpcSource == "" {
 		return fmt.Errorf("no rpc source set")