Add some mini-quiz placeholders in TierNFT lesson .mdx file

Author: elPiablo

pages/lessons/projects/3.mdx

@@ -35,6 +35,14 @@ services depending on the NFT they mint and own.
 I'M NOT AT ALL SURE WHAT WE ARE BUILDING..... MAKE SURE WE ADD THAT WE'LL BE INHERITING A FEW MORE OZ CONTRACTS ThIS TIME. MAYBE A NUDGE TO LEARNER TO READ SOME OF THE OZ CODE?
 
 WARM-UP QUESTIONS ⁉️
+<SideDrawer buttonText="Checkpoint Questions" title="Creating a Robust Development Environment">
+      <Question question="lesson-3/<# of section block+section name/Q1" />
+      <Question question="lesson-3//Q2" />
+      <Question question="lesson-3//Q3" />
+      <Question question="lesson-3//Q4" />
+      <Question question="lesson-3/-/Q5" />
+</SideDrawer>
+<br/>
 ![1_diagram.png](/assets/lessons/3/1_diagram.png)
 
 PART 2  ASSERTIONS AND DATA TYPES e.g. MAPPINGS
@@ -319,6 +327,15 @@ contract TierNFT is ERC721 {
 <br/>
 
 CHECKPOINT QUESTIONS ⁉️ <br />
+<SideDrawer buttonText="Checkpoint Questions" title="Creating a Robust Development Environment">
+      <Question question="lesson-3/<# of section block+section name/Q1" />
+      <Question question="lesson-3//Q2" />
+      <Question question="lesson-3//Q3" />
+      <Question question="lesson-3//Q4" />
+      <Question question="lesson-3/-/Q5" />
+</SideDrawer>
+<br/>
+
 PART 3 
 
 ### Create a (simple) tokenURI function