total restructure: isolate functionality to core so web works

src/core/PluginRegistry.js

@@ -0,0 +1,32 @@
+export default class PluginRegistry {
+    constructor(environment = 'web') {
+        this.plugins = new Map()
+        this.environment = environment
+    }
+
+    register(plugin) {
+        if (!plugin.id) {
+            throw new Error('Plugin must have an id')
+        }
+
+        const environments = plugin.environments || ['electron', 'web']
+        if (!environments.includes(this.environment)) {
+            return
+        }
+
+        this.plugins.set(plugin.id, plugin)
+    }
+
+    get(id) {
+        return this.plugins.get(id)
+    }
+
+    list() {
+        return Array.from(this.plugins.values()).map((plugin) => ({
+            id: plugin.id,
+            name: plugin.name,
+            description: plugin.description,
+            configSchema: plugin.configSchema,
+        }))
+    }
+}