Massive restructure of plugin API

plug-api/silverbullet-syscall/system.ts

@@ -0,0 +1,24 @@
+import type { CommandDef } from "../../web/hooks/command.ts";
+import { syscall } from "./syscall.ts";
+
+export function invokeFunction(
+  env: string,
+  name: string,
+  ...args: any[]
+): Promise<any> {
+  return syscall("system.invokeFunction", env, name, ...args);
+}
+
+// Only available on the client
+export function invokeCommand(name: string): Promise<any> {
+  return syscall("system.invokeCommand", name);
+}
+
+// Only available on the client
+export function listCommands(): Promise<{ [key: string]: CommandDef }> {
+  return syscall("system.listCommands");
+}
+
+export function reloadPlugs() {
+  syscall("system.reloadPlugs");
+}