Add metadata for testcontainers:1.19.8 (#533)

Author: Kehrlann

metadata/org.testcontainers/testcontainers/1.19.8/index.json

@@ -0,0 +1,5 @@
+[
+  "proxy-config.json",
+  "reflect-config.json",
+  "resource-config.json"
+]

metadata/org.testcontainers/testcontainers/1.19.8/proxy-config.json

@@ -0,0 +1,10 @@
+[
+  {
+    "condition": {
+      "typeReachable": "org.testcontainers.dockerclient.RootlessDockerClientProviderStrategy"
+    },
+    "interfaces": [
+      "org.testcontainers.dockerclient.RootlessDockerClientProviderStrategy$LibC"
+    ]
+  }
+]