feat(format-diagnostics): add diagnostic information to format result payload

src/types/FormatResult.ts

@@ -0,0 +1,7 @@
+import { Diagnostic } from './Diagnostic'
+
+export interface FormatResult {
+  updatedFilePaths: string[]
+  fixedDiagnosticsCount: number
+  unfixedDiagnostics: Map<string, Diagnostic[]> | Diagnostic[]
+}

src/types/index.ts

@@ -1,4 +1,5 @@
 export * from './Diagnostic'
+export * from './FormatResult'
 export * from './LintConfig'
 export * from './LintRule'
 export * from './LintRuleType'