Migrate to Deno (#86)

Big bang migration to Deno 🤯

plugs/core/command.ts

@@ -0,0 +1,18 @@
+import { matchBefore } from "../../syscall/silverbullet-syscall/editor.ts";
+import { listCommands } from "../../syscall/silverbullet-syscall/system.ts";
+
+export async function commandComplete() {
+  let prefix = await matchBefore("\\{\\[[^\\]]*");
+  if (!prefix) {
+    return null;
+  }
+  let allCommands = await listCommands();
+
+  return {
+    from: prefix.from + 2,
+    options: Object.keys(allCommands).map((commandName) => ({
+      label: commandName,
+      type: "command",
+    })),
+  };
+}