chore: update readme with set api key command

README.md

@@ -9,10 +9,11 @@ The SQL studio enables developers to query SQL-enabled subgraphs on The Graph.
 ![Demo](https://sql-studio-webapp.vercel.app/studio.gif)
 
 1. Open the extension on the *Activity Bar*
-2. Select the Substreams Uniswap v3 Ethereum subgraph (ID: HUZDsRpEVP2AvzDCyzDHtdc64dyDxx8FQjzsmqSg4H3B). You'll know it's selected when the icon next to it becomes a green circle.
-3. Run `New Query` or click on the new file button that you see when you hover your mouse over the *Available Subgraphs* menu. This will create a GSQL file with the ID field pre-populated.
-4. Type in a query. For instance, `SELECT * FROM token LIMIT 1;`
-5. Run the query using either the `Run Query` command or `C-m C-r`
+3. Use the `Set Api Key` command to enter your authentication token.
+3. Select the Substreams Uniswap v3 Ethereum subgraph (ID: HUZDsRpEVP2AvzDCyzDHtdc64dyDxx8FQjzsmqSg4H3B). You'll know it's selected when the icon next to it becomes a green circle.
+4. Run `New Query` or click on the new file button that you see when you hover your mouse over the *Available Subgraphs* menu. This will create a GSQL file with the ID field pre-populated.
+5. Type in a query. For instance, `SELECT * FROM token LIMIT 1;`
+6. Run the query using either the `Run Query` command or `C-m C-r`
 
 ## Features
 
@@ -25,11 +26,12 @@ The SQL studio enables developers to query SQL-enabled subgraphs on The Graph.
   - `New Query` - Create a GSQL window to write a new query. If you've already selected a subgraph in the *Available Subgraphs* menu, it will automatically populate the `ID` field in the document.
   - `Add Subgraph Info` (`C-m C-a`) - If you haven't yet added a subgraph to the document, it will add the name and ID of the currently selected subgraph.
   - `Replace Subgraph Info` (`C-m C-p`) - If there is no subgraph metadata in the document, add the metadata associated with the currently selected one. If there is, replace it with the currently selected one.
-  - `Run Query` (`C-m C-r`) - Execute the query
-  - `Cancel Query` (`C-m C-c`) - Cancel execution
-  - `Show Results` (`C-m C-n`) - Show the results of the executed query
-  - `Load More Subgraphs` (`C-m C-l`) - Load the available subgraphs by signalled amount
-  - `Search Subgraph by Name and Description` (`C-m C-s`) - Search the subgraph by its name and description
+  - `Run Query` (`C-m C-r`) - Execute the query.
+  - `Cancel Query` (`C-m C-c`) - Cancel execution.
+  - `Show Results` (`C-m C-n`) - Show the results of the executed query.
+  - `Load More Subgraphs` (`C-m C-l`) - Load the available subgraphs by signalled amount.
+  - `Search Subgraph by Name and Description` (`C-m C-s`) - Search the subgraph by its name and description.
+  - `Set gateway API Key` - Prompt to set the API key necessary for querying. Can be run anytime via the command palette.
   - `Report a Bug` (`C-m C-b`) - Report a bug to us!
 - View result table with
   - Sort by clicking column names