chore: implement basic logic to show a text field in the MultiEntry component

This logic does not support any info types other than a String, represented by an OutlinedTextField. To support more, this will likely need to completely overhaul every input component so that they accept the ValueType as a primary argument.

src/common/mod.rs

@@ -1,4 +1,5 @@
 mod student_info;
 mod user;
+mod form_schema;
 
-pub use self::{student_info::*, user::*};
+pub use self::{student_info::*, user::*, form_schema::*};