add catchall system & http pc server

- define a catchall name to run globally or per service
- catchall must be javascript, but not necessarily a .js file
- catchall can request async mode
- catchall will catch any non-existing requests under its directory
- see wtv-flashrom:/content/content-serve.js as an example, which will catch wtv-flashrom:/content/ URLs.

- http pc: sends HTTP/1.0 to PC clients
- can be disabled with `pc_server_hidden_service_enabled`: false
- can change servicevault path by changing string of pc_server_hidden_service
- get.js in default PC service vault to get any WTV Url on the service

zefie_wtvp_minisrv/ServiceVault/wtv-flashrom/content/content-serve.js

@@ -0,0 +1,23 @@
+const WTVFlashrom = require("./WTVFlashrom.js");
+request_is_async = true;
+console.log(request_headers);
+
+var bf0app_update = false;
+var request_path = request_headers.request_url.replace(service_name + ":/", "");
+var romtype = ssid_sessions[socket.ssid].get("wtv-client-rom-type");
+var bootver = ssid_sessions[socket.ssid].get("wtv-client-bootrom-version")
+
+if ((romtype == "bf0app" || !romtype) && (bootver == "105" || !bootver)) {
+	// assume old classic in flash mode, override user setting and send tellyscript
+	// because it is required to proceed in flash mode
+	bf0app_update = true;
+	ssid_sessions[socket.ssid].set("bf0app_update", bf0app_update);
+}
+
+if (!ssid_sessions[socket.ssid].data_store.WTVFlashrom) {
+	ssid_sessions[socket.ssid].data_store.WTVFlashrom = new WTVFlashrom(service_vaults, service_name, minisrv_config.services[service_name].use_zefie_server, bf0app_update, minisrv_config.services[service_name].debug);
+}
+
+ssid_sessions[socket.ssid].data_store.WTVFlashrom.getFlashRom(request_path, function (data, headers) {
+	sendToClient(socket, headers, data);
+});