fix: mark @babel/core as optional peer dependency (#739)

* Fixes #736

Moving `@babel/core` from devDependencies to dependencies.
Fixes the missing dependency error that comes while installing it through `Yarn 2, Yarn 3`.

Error - 
`
styled-jsx@npm:4.0.0 [78a22] doesn't provide @babel/core (pad17e), requested by @babel/plugin-syntax-jsx
`

* moving babel back to dev deps and adding peerdependencies meta option

* Update package.json

Co-authored-by: Jiachi Liu <inbox@huozhi.im>

package.json

@@ -94,6 +94,11 @@
   "peerDependencies": {
     "react": ">= 16.8.0 || 17.x.x || 18.x.x"
   },
+  "peerDependenciesMeta": {
+    "@babel/core": {
+      "optional": true
+     }
+  },
   "engines": {
     "node": ">= 12.0.0"
   },