- Added the ability for a student/developer to choose a gender for a speaking instructor;

- Made it so, if chosen, the user will only get speaking exams with their chosen gender;
- Added the ability for speaking exams to select a gender when generating;

src/interfaces/exam.ts

@@ -2,6 +2,7 @@ import {Module} from ".";
 
 export type Exam = ReadingExam | ListeningExam | WritingExam | SpeakingExam | LevelExam;
 export type Variant = "full" | "partial";
+export type InstructorGender = "male" | "female" | "varied";
 
 export interface ReadingExam {
 	parts: ReadingPart[];
@@ -82,7 +83,7 @@ export interface SpeakingExam {
 	minTimer: number;
 	isDiagnostic: boolean;
 	variant?: Variant;
-	instructorGender: "male" | "female" | "varied";
+	instructorGender: InstructorGender;
 }
 
 export type Exercise =