Added test case for Adapter

1. Removed config files from config folder.
2. Added test cases for the Adapter with code coverage of 91%.
3. Resolved linting issues.

config/bpp-local.yaml

@@ -1,63 +0,0 @@
-appName: "bppClientService"
-log:
-  level: debug
-  destinations:
-    - type: stdout
-  context_keys:
-    - transaction_id
-    - message_id
-http:
-  port: 8080
-  timeout:
-    read: 30
-    write: 30
-    idle: 30
-plugin:
-  root: extracted/plugins
-  pluginZipPath: plugins_bundle.zip
-  plugins:
-    - publisher
-    - nopschemavalidator
-    - router
-    - nopsigner
-    - nopsignvalidator
-    - reqpreprocessor
-    - gcpAuthMdw
-module:
-  modules:
-    - name: transactionReciever
-      path: /reciever
-      targetType: msgQ
-      plugin:
-        schemaValidator:
-          id: nopschemavalidator
-        signValidator:
-          id: nopsignValidator
-        publisher:
-          id: publisher
-          config:
-            project: ondc-seller-dev
-            topic: clientSideTopic
-        Router:
-          id: router
-          config:
-            routingConfigPath: configs/bppRecieverRouting-config.yaml
-        preProcessors:
-          - id: reqpreprocessor
-    - name: transactionCaller
-      path: /caller
-      targetType: "http"
-      plugin:
-        signer:
-          id: nopsigner
-        Router:
-          id: router
-          config:
-            routingConfigPath: configs/bppCallerRouting-config.yaml
-        preProcessors:
-          - id: reqpreprocessor
-        postProcessors:
-          - id: gcpAuthMdw
-            config:
-              audience: "target"
-