Add support for loading test results from artifacts

src/input-providers/input-provider.ts

@@ -0,0 +1,13 @@
+export interface ReportInput {
+  [reportName: string]: FileContent[]
+}
+
+export interface FileContent {
+  file: string
+  content: string
+}
+
+export interface InputProvider {
+  load(): Promise<ReportInput>
+  listTrackedFiles(): Promise<string[]>
+}