pkgs/ok_http: Condense JNI Bindings to single_file structure, and add missing server errors test (#1221)

Author: Anikate-De

pkgs/ok_http/analysis_options.yaml

@@ -2,4 +2,4 @@ include: ../../analysis_options.yaml
 
 analyzer:
   exclude:
-    - lib/src/third_party/
+    - "lib/src/jni/bindings.dart"

pkgs/ok_http/example/integration_test/client_test.dart

@@ -21,6 +21,7 @@ Future<void> testConformance() async {
     testRequestMethods(OkHttpClient(), preservesMethodCase: true);
     testResponseStatusLine(OkHttpClient());
     testCompressedResponseBody(OkHttpClient());
+    testServerErrors(OkHttpClient());
     testIsolate(OkHttpClient.new);
     testResponseCookies(OkHttpClient(), canReceiveSetCookieHeaders: true);
   });

pkgs/ok_http/jnigen.yaml

@@ -8,7 +8,8 @@ summarizer:
 
 output:
   dart:
-    path: "lib/src/third_party/"
+    path: "lib/src/jni/bindings.dart"
+    structure: single_file
 
 enable_experiment:
   - "interface_implementation"