better support for BLE UART and alignment with serial blocks. (#276)

* aligning uart apis with serial

* reorganizing serial/bluetooth blocks

* Autoupdate configuration for UART. (#279)

* Autoupdate configuration for UART.

* removing serial autoupdates.

sim/state/misc.ts

@@ -168,7 +168,7 @@ namespace pxsim.bluetooth {
     export function uartWrite(s : string): void {
         // TODO
     }
-    export function uartRead(): string {
+    export function uartReadUntil(del: string): string {
         // TODO
         return ""
     }