Migrate to Deno (#86)

Big bang migration to Deno 🤯

common/types.ts

@@ -0,0 +1,31 @@
+export const maximumAttachmentSize = 100 * 1024 * 1024; // 100 MB
+
+export type FileMeta = {
+  name: string;
+  lastModified: number;
+  contentType: string;
+  size: number;
+  perm: "ro" | "rw";
+};
+
+export type PageMeta = {
+  name: string;
+  lastModified: number;
+  lastOpened?: number;
+  perm: "ro" | "rw";
+};
+
+export type AttachmentMeta = {
+  name: string;
+  contentType: string;
+  lastModified: number;
+  size: number;
+  perm: "ro" | "rw";
+};
+
+// Used by FilterBox
+export type FilterOption = {
+  name: string;
+  orderId?: number;
+  hint?: string;
+};