chore: create index files for better import/export api

src/features/SetupFont/lib/index.ts

@@ -0,0 +1 @@
+export { createTypographyControlManager } from './controlManager/controlManager.svelte';

src/features/SetupFont/model/index.ts

@@ -0,0 +1,16 @@
+export {
+    DEFAULT_FONT_SIZE,
+    DEFAULT_FONT_WEIGHT,
+    DEFAULT_LINE_HEIGHT,
+    FONT_SIZE_STEP,
+    FONT_WEIGHT_STEP,
+    LINE_HEIGHT_STEP,
+    MAX_FONT_SIZE,
+    MAX_FONT_WEIGHT,
+    MAX_LINE_HEIGHT,
+    MIN_FONT_SIZE,
+    MIN_FONT_WEIGHT,
+    MIN_LINE_HEIGHT,
+} from './const/const';
+
+export { controlManager } from './state/manager.svelte';