feat(vue): expand @robonen/vue composable collection

Composables, tests, category barrels, and README for @robonen/vue.

vue/toolkit/src/composables/index.ts

@@ -1,9 +1,16 @@
+export * from './animation';
+export * from './array';
 export * from './browser';
 export * from './component';
 export * from './debug';
+export * from './elements';
+export * from './forms';
 export * from './lifecycle';
 export * from './math';
+export * from './media';
 export * from './reactivity';
+export * from './sensors';
 export * from './state';
 export * from './storage';
 export * from './utilities';
+export * from './watch';