Add camelcase rule, import Error type from JS and rename get_inner_color to inner. (#44)

* Add camelcase rule to .eslintrc.js

* Import Error type from JS, rename crate::wrappers::Color::get_inner_color to crate::wrappers::Color::inner

client/web/.eslintrc.js

@@ -19,5 +19,6 @@ module.exports = {
 		"linebreak-style": ["error", "unix"],
 		indent: ["error", "tab"],
 		quotes: ["error", "double"],
+		camelcase: ["error", { ignoreImports: true, ignoreDestructuring: true }]
 	},
 };