Added the seperate sign up for student and faculty with tabs

app/src/main/AndroidManifest.xml

...main/java/com/example/taskboxx/FacultySignUpFragment.java

app/src/main/java/com/example/taskboxx/SignUpActivity.java

...main/java/com/example/taskboxx/StudentSignUpFragment.java

app/src/main/java/com/example/taskboxx/viewpageradapter.java

app/src/main/res/layout/activity_sign_up.xml

app/src/main/res/layout/fragment_faculty_sign_up.xml

app/src/main/res/layout/fragment_student_sign_up.xml

app/src/main/res/layout/toolbar_layout.xml