Update locale language codes

loc/en_GB.ts

@@ -3,7 +3,7 @@
 
 export const en_GB = {
     display_name: 'British English',
-    language_code: 'en_GB',
+    language_code: 'en-GB',
     translations: {
         something_went_wrong: 'Something unexpectedly went wrong',
         description: 'A tool to convert 3D models into Minecraft formats such as .schematic, .litematic, .schem and .nbt.',

loc/en_US.ts

@@ -5,7 +5,7 @@ import { TLocaleDefinition } from './base';
 
 export const en_US: TLocaleDefinition = {
     display_name: 'American English',
-    language_code: 'en_US',
+    language_code: 'en-US',
     translations: {
         init: {
             initialising: 'Initializing...',

loc/fr_FR.ts

@@ -6,7 +6,7 @@ import { TLocaleDefinition } from './base';
 
 export const fr_FR: TLocaleDefinition = {
     display_name: 'Français',
-    language_code: 'fr_FR',
+    language_code: 'fr-FR',
     translations: {
         something_went_wrong: 'Une erreur s\'est produite',
         init: {

loc/ru_RU.ts

@@ -5,7 +5,7 @@ import { TLocaleDefinition } from './base';
 
 export const ru_RU: TLocaleDefinition = {
     display_name: 'Ру́сский',
-    language_code: 'ru_RU',
+    language_code: 'ru-RU',
     translations: {
         import: {
             button: 'Загрузить mesh',

loc/zh_CN.ts

@@ -5,7 +5,7 @@ import { TLocaleDefinition } from './base';
 
 export const zh_CN: TLocaleDefinition = {
     display_name: '简体中文',
-    language_code: 'zh_CN',
+    language_code: 'zh-CN',
     translations: {
         something_went_wrong: '发生了意料之外的错误',
         description: '一款将 3D 模型转换为 .schematic，.litematic，.schem 和 .nbt 等 Minecraft 方块格式的工具',

src/config.ts

@@ -15,7 +15,7 @@ export class AppConfig {
     public readonly VERSION_TYPE: 'd' | 'a' | 'r' = 'r'; // dev, alpha, or release build
     public readonly MINECRAFT_VERSION = '1.19.4';
 
-    public readonly LOCALE = 'en_GB';
+    public readonly LOCALE = 'en-GB';
     public readonly VOXEL_BUFFER_CHUNK_SIZE = 50_000;
     public readonly AMBIENT_OCCLUSION_OVERRIDE_CORNER = true;
     public readonly USE_WORKER_THREAD = true;

src/localiser.ts

@@ -38,7 +38,7 @@ export class Localiser {
 
         await i18next.init({
             lng: AppConfig.Get.LOCALE,
-            fallbackLng: 'en_GB',
+            fallbackLng: 'en-GB',
             debug: true,
             resources: localResources,
         });

styles.css

@@ -1,5 +1,5 @@
 @import url('https://fonts.googleapis.com/css2?family=Rubik:wght@400&display=swap');
-@import url('https://fonts.googleapis.com/css2?family=Courier+Prime&display=swap');
+@import url('https://fonts.googleapis.com/css2?family=Martian+Mono&display=swap');
 
 :root {
   --pill-radius: 5px;
@@ -100,9 +100,9 @@ canvas {
 
 .column-console {
   background: hsl(0, 0%, 5%);
-  font-size: var(--font-size-standard);
+  font-size: var(--font-size-small);
   color: var(--text-dim);
-  font-family: 'Courier Prime';
+  font-family: 'Martian Mono';
 }
 
 .column-sidebar {