feat(config): 支持限定 Maven 仓库构件类型.

增加 Maven 仓库配置, 支持限定仓库可获取的构件发布类型(发布或快照).
此改动有利于用户增加仓库约束, 防止意外使用错误的扩展包版本.

scalabot-app/src/main/kotlin/AppConfigs.kt

@@ -106,6 +106,8 @@ internal data class MavenRepositoryConfig(
     val url: URL,
     val proxy: Proxy? = Proxy("http", "127.0.0.1", 1080),
     val layout: String = "default",
+    val enableReleases: Boolean = true,
+    val enableSnapshots: Boolean = true,
     // 可能要设计个 type 来判断解析成什么类型的 Authentication.
     val authentication: Authentication? = null
 ) {
@@ -121,14 +123,14 @@ internal data class MavenRepositoryConfig(
 
         builder.setReleasePolicy(
             RepositoryPolicy(
-                true,
+                enableReleases,
                 RepositoryPolicy.UPDATE_POLICY_NEVER,
                 RepositoryPolicy.CHECKSUM_POLICY_FAIL
             )
         )
         builder.setSnapshotPolicy(
             RepositoryPolicy(
-                true,
+                enableSnapshots,
                 RepositoryPolicy.UPDATE_POLICY_ALWAYS,
                 RepositoryPolicy.CHECKSUM_POLICY_WARN
             )

scalabot-app/src/main/kotlin/util/Serializers.kt

@@ -142,12 +142,15 @@ internal object MavenRepositoryConfigSerializer
         return when (json) {
             is JsonObject -> {
                 MavenRepositoryConfig(
+                    id = json.get("id")?.asString,
                     url = URL(checkJsonKey(json, "url")),
                     proxy = if (json.has("proxy") && json.get("proxy").isJsonObject)
                         context.deserialize<Proxy>(
                             json.getAsJsonObject("proxy"), Proxy::class.java
                         ) else null,
                     layout = json.get("layout").asString ?: "default",
+                    enableReleases = json.get("enableReleases")?.asBoolean ?: true,
+                    enableSnapshots = json.get("enableSnapshots")?.asBoolean ?: true,
                     authentication = if (json.has("authentication") && json.get("authentication").isJsonObject)
                         context.deserialize<Authentication>(
                             json.getAsJsonObject("authentication"), Authentication::class.java