add 'Proof Using' hints to enable -quick compilation

theories/typing/type_context.v

@@ -3,6 +3,7 @@ From iris.base_logic Require Import big_op.
 From lrust.lang Require Import notation.
 From lrust.lifetime Require Import definitions.
 From lrust.typing Require Import type lft_contexts.
+Set Default Proof Using "Type".
 
 Definition path := expr.
 Bind Scope expr_scope with path.

theories/typing/type_sum.v

@@ -3,6 +3,7 @@ From lrust.lang Require Import heap memcpy.
 From lrust.lifetime Require Import borrow frac_borrow.
 From lrust.typing Require Export uninit uniq_bor shr_bor own sum.
 From lrust.typing Require Import lft_contexts type_context programs product.
+Set Default Proof Using "Type".
 
 Section case.
   Context `{typeG Σ}.

theories/typing/uninit.v

 From iris.proofmode Require Import tactics.
 From lrust.typing Require Export type.
 From lrust.typing Require Import product.
+Set Default Proof Using "Type".
 
 Section uninit.
   Context `{typeG Σ}.

theories/typing/uniq_bor.v

@@ -4,6 +4,7 @@ From lrust.lifetime Require Import borrow frac_borrow reborrow.
 From lrust.lang Require Import heap.
 From lrust.typing Require Export type.
 From lrust.typing Require Import lft_contexts type_context shr_bor programs.
+Set Default Proof Using "Type".
 
 Section uniq_bor.
   Context `{typeG Σ}.