Add support for using TOML as configuration file format

Add basic support for trojan-grpc nodes.
Refactor codes.

base/snippets/groups.toml

@@ -0,0 +1,91 @@
+[[custom_groups]]
+name = "🔰 节点选择"
+type = "select"
+rule = ["[]♻️ 自动选择", "[]🎯 全球直连", ".*"]
+
+[[custom_groups]]
+name = "♻️ 自动选择"
+type = "url-test"
+rule = [".*"]
+url = "http://www.gstatic.com/generate_204"
+interval = 300
+
+[[custom_groups]]
+name = "🎥 NETFLIX"
+type = "select"
+rule = [
+    "[]🔰 节点选择",
+    "[]♻️ 自动选择",
+    "[]🎯 全球直连",
+    ".*"
+]
+
+[[custom_groups]]
+name = "⛔️ 广告拦截"
+type = "select"
+rule = ["[]🛑 全球拦截",
+"[]🎯 全球直连",
+"[]🔰 节点选择"
+]
+
+[[custom_groups]]
+name = "🚫 运营劫持"
+type = "select"
+rule = ["[]🛑 全球拦截",
+"[]🎯 全球直连",
+"[]🔰 节点选择"]
+
+[[custom_groups]]
+name = "🌍 国外媒体"
+type = "select"
+rule = ["[]🔰 节点选择",
+"[]♻️ 自动选择",
+"[]🎯 全球直连",
+".*"]
+
+[[custom_groups]]
+name = "🌏 国内媒体"
+type = "select"
+rule = ["[]🎯 全球直连",
+"(HGC|HKBN|PCCW|HKT|深台|彰化|新北|台|hk|港|tw)",
+"[]🔰 节点选择"]
+
+[[custom_groups]]
+name = "Ⓜ️ 微软服务"
+type = "select"
+rule = ["[]🎯 全球直连",
+"[]🔰 节点选择",
+".*"]
+
+[[custom_groups]]
+name = "📲 电报信息"
+type = "select"
+rule = ["[]🔰 节点选择",
+"[]🎯 全球直连",
+".*"]
+
+[[custom_groups]]
+name = "🍎 苹果服务"
+type = "select"
+rule = ["[]🔰 节点选择",
+"[]🎯 全球直连",
+"[]♻️ 自动选择",
+".*"]
+
+[[custom_groups]]
+name = "🎯 全球直连"
+type = "select"
+rule = ["[]DIRECT"]
+
+[[custom_groups]]
+name = "🛑 全球拦截"
+type = "select"
+rule = ["[]REJECT", "[]DIRECT"]
+
+[[custom_groups]]
+name = "🐟 漏网之鱼"
+type = "select"
+rule = ["[]🔰 节点选择",
+"[]🎯 全球直连",
+"[]♻️ 自动选择",
+".*"]