feat: add config support

Signed-off-by: MiaoWoo <admin@yumc.pw>

packages/plugin/src/config.ts

@@ -0,0 +1,40 @@
+import * as yaml from 'js-yaml'
+
+export interface PluginConfigLoader {
+    load(content: string): any;
+    dump(variable: any): string;
+}
+
+export class YamlPluginConfig implements PluginConfigLoader {
+    load(content: string) {
+        return yaml.safeLoad(content);
+    }
+    dump(variable: any): string {
+        return yaml.safeDump(variable);
+    }
+}
+
+export class JsonPluginConfig implements PluginConfigLoader {
+    load(content: string) {
+        return JSON.parse(content);
+    }
+    dump(variable: any): string {
+        return JSON.stringify(variable);
+    }
+}
+
+const configLoaderMap = new Map<string, PluginConfigLoader>();
+
+export function getConfigLoader(format: string) {
+    if (!configLoaderMap.has(format)) { throw new Error(`Unsupport config format ${format} !`) }
+    return configLoaderMap.get(format);
+}
+
+function init() {
+    configLoaderMap.set("json", new JsonPluginConfig())
+    let yaml = new YamlPluginConfig()
+    configLoaderMap.set("yml", yaml)
+    configLoaderMap.set("yaml", yaml)
+}
+
+init()