feat: create (hopefully definitive) placeholders for checkpoint questions

Author: elPiablo

src/pages/lessons/projects/6.mdx

@@ -302,9 +302,12 @@ rm src/*
 rm test/*
 ```
 
-Now that we have everything ready, we can go ahead and start coding Solidity.
+<SideDrawer
+  buttonText="Checkpoint Questions will be here"
+  title="">
+</SideDrawer>
 
-### 😊 CHECKPOINT QUESTIONS 😊 
+Everything's ready, so let's go ahead and start coding Solidity.
 
 ## Create the Framing and Walls
 
@@ -439,7 +442,12 @@ because that's required by the ERC20 standard.
 
 We have now created doors to our house, but we haven't put locks in them!
 
-### 😊 CHECKPOINT QUESTIONS 😊 
+
+<SideDrawer
+  buttonText="Checkpoint Questions will be here"
+  title="">
+</SideDrawer>
+
 
 ## Lock the Door!
 
@@ -503,6 +511,7 @@ the contract, and then restricted access to our `mint` function.
 Now any address that doesn't have the `MINTER_ROLE` granted, will revert on any
 transaction that calls our `mint` function. Hooray! Our door is now locked, but only for intruders!
 
+
 ## Final Touches and details
 
 Congratulations! We have built a fully functioning token!
@@ -597,7 +606,11 @@ can find and fix them. If you can't fix them, you can go into our forum and try
 to ask our community for help by explaining your error, the console output and
 your configuration (OS, version, Foundry and Solidity version, etc.)
 
-### 😊 CHECKPOINT QUESTIONS 😊 
+
+<SideDrawer
+  buttonText="Checkpoint Questions will be here"
+  title="">
+</SideDrawer>
 
 ## Register your house in the Real Estate Register
 
@@ -767,6 +780,14 @@ If we filter out all information, we should pay attention to the second line, wh
 the tool tells us what the address of the deployed contract is:
 `0xCE68eD7AEd9A1c6C185f2B8b576e7cBD7bf5dAAf`.
 
+
+<SideDrawer
+  buttonText="Checkpoint Questions will be here"
+  title="">
+</SideDrawer>
+
+## Querying the Block Explorer
+
 You can go into [Sepolia Etherscan](https://sepolia.etherscan.io/) block
 explorer and search for this address that the command returned to check out your
 very own newly deployed smart contract!
@@ -800,6 +821,7 @@ our decimals in 18, that would be exactly 1000 MTK.
 
 ![ERC20-1000MTK](/assets/lessons/6/ERC20-1000MTK.png)
 
+
 ### 😊 FINAL QUIZ 😊 
 
 ## Invite your frens!