WIP: Add review creation using GraphQL API

Author: Tunous

app/build.gradle

@@ -19,6 +19,7 @@ repositories {
 }
 
 apply plugin: 'com.android.application'
+apply plugin: 'com.apollographql.android'
 
 if (isPlaystore) {
     apply plugin: 'io.fabric'

app/src/main/graphql/com/gh4a/AddPullRequestReviewCommentMutation.graphql

@@ -0,0 +1,21 @@
+mutation AddPullRequestReviewCommentMutation(
+  $pullRequestReviewId: ID!,
+  $commitOID: GitObjectID,
+  $body: String!,
+  $path: String,
+  $position: Int,
+  $inReplyTo: ID
+) {
+  addPullRequestReviewComment(input: {
+    pullRequestReviewId: $pullRequestReviewId,
+    commitOID: $commitOID,
+    body: $body,
+    path: $path,
+    position: $position,
+    inReplyTo: $inReplyTo
+  }) {
+    comment {
+      body
+    }
+  }
+}

app/src/main/graphql/com/gh4a/AddPullRequestReviewMutation.graphql

@@ -0,0 +1,13 @@
+mutation AddPullRequestReviewMutation(
+  $pullRequestId: ID!,
+  $comments: [DraftPullRequestReviewComment]!
+) {
+  addPullRequestReview(input: {
+    pullRequestId: $pullRequestId,
+    comments: $comments
+  }) {
+    pullRequestReview {
+      id
+    }
+  }
+}

app/src/main/graphql/com/gh4a/PullRequestPendingReviewQuery.graphql

@@ -0,0 +1,16 @@
+query PullRequestPendingReviewQuery(
+  $owner: String!,
+  $repo: String!,
+  $prNumber: Int!
+) {
+  repository(owner: $owner, name: $repo) {
+    pullRequest(number: $prNumber) {
+      id
+      reviews(states: PENDING, first: 1) {
+        nodes {
+          id
+        }
+      }
+    }
+  }
+}