feat: extend github api

Add api call to fetch pull request comments

src/github.ts

@@ -27,6 +27,8 @@ export interface GitHub {
 
   issues(owner: string, repo: string, parameters?: IssuesParameters): Promise<GitHubResponse<Issue[]>>;
 
+  getPullRequestComments(owner: string, repo: string, number: number): Promise<GitHubResponse<PullRequestComment[]>>;
+
 }
 
 export interface GitHubResponse<T> {
@@ -35,6 +37,13 @@ export interface GitHubResponse<T> {
   body: T;
 }
 
+export interface PullRequestComment {
+  diff_hunk: string;
+  path: string;
+  position: number;
+  body: string;
+}
+
 export interface Issue {
   html_url: string;
   number: number;
@@ -210,7 +219,7 @@ namespace impl {
 
     @Headers('Accept: application/vnd.github.polaris-preview')
     @Get('/repos/:owner/:repo')
-    public getRepository(_owner: string, _repo: string): any {/* */}
+    public getRepository(): any {/* */}
 
     @Get('/repos/:owner/:repo/pulls/:number')
     public getPullRequest(): any {/* */}
@@ -245,5 +254,8 @@ namespace impl {
     @Get('/repos/:owner/:repo/issues', true)
     public issues(): any {/* */}
 
+    @Get('/repos/:owner/:repo/pulls/:number/comments')
+    public getPullRequestComments(): any {/* */}
+
   }
 }