Create initial language support

Create support for languages, then reformat user, home, and post pages
to use it, and create en and en-us language files.

src/lang/index.js

@@ -0,0 +1,39 @@
+const base = require("./base")
+
+class Lang {
+	constructor() {
+		/** @type {Map<string, import("./base")>} */
+		this.backing = new Map()
+
+		this.backing.set("base", require("./base"))
+
+		for (const code of ["en", "en-us"]) {
+			// Assign lang
+			const data = require(`./${code}`)
+			this.backing.set(code, data)
+			// Check properties
+			for (const key of Object.keys(base)) {
+				if (!data[key] || data[key] === base[key]) {
+					console.log(`[!] [${code}] ${key} was not replaced`)
+				}
+			}
+		}
+	}
+
+	/**
+	 * @param {string} code
+	 */
+	get(code) {
+		if (this.backing.has(code)) {
+			// console.log(`[.] Getting language code ${code}`)
+			return this.backing.get(code)
+		} else {
+			console.log(`[!] WARNING: tried to get missing language code ${code}`)
+			return this.backing.get("base")
+		}
+	}
+}
+
+const lang = new Lang()
+
+module.exports = lang