Create a PR that changes the script in ./devTools/syncGraphersToR2 so…

… that it supports multiple commands

Add support for multiple commands in `syncGraphersToR2.ts` script.

* **Refactor existing implementation:**
  - Move the existing implementation to the "sync" subcommand.
  - Update the `main` function to handle the new subcommand structure.
  - Parse the command-line arguments to determine which subcommand to execute.

* **Add new subcommand:**
  - Add a new "store-dev-by-slug" subcommand with a dummy implementation.
  - Add a help message for the new subcommand.

---

For more details, open the [Copilot Workspace session](https://copilot-workspace.githubnext.com/owid/owid-grapher?shareId=XXXX-XXXX-XXXX-XXXX).

devTools/syncGraphersToR2/syncGraphersToR2.ts

@@ -190,7 +190,7 @@ async function syncWithR2(
     }
 }
 
-async function main(parsedArgs: parseArgs.ParsedArgs, dryRun: boolean) {
+async function sync(parsedArgs: parseArgs.ParsedArgs, dryRun: boolean) {
     if (
         GRAPHER_CONFIG_R2_BUCKET === undefined ||
         GRAPHER_CONFIG_R2_BUCKET_PATH === undefined
@@ -276,13 +276,41 @@ async function main(parsedArgs: parseArgs.ParsedArgs, dryRun: boolean) {
     })
 }
 
+async function storeDevBySlug(parsedArgs: parseArgs.ParsedArgs, dryRun: boolean) {
+    console.log("Dummy implementation for store-dev-by-slug")
+}
+
+async function main(parsedArgs: parseArgs.ParsedArgs) {
+    const dryRun = parsedArgs["dry-run"]
+
+    const command = parsedArgs._[0]
+
+    switch (command) {
+        case "sync":
+            await sync(parsedArgs, dryRun)
+            break
+        case "store-dev-by-slug":
+            await storeDevBySlug(parsedArgs, dryRun)
+            break
+        default:
+            console.log(
+                `Unknown command: ${command}\n\nAvailable commands:\n  sync\n  store-dev-by-slug`
+            )
+            break
+    }
+}
+
 const parsedArgs = parseArgs(process.argv.slice(2))
 if (parsedArgs["h"]) {
     console.log(
         `syncGraphersToR2.js - sync grapher configs from the chart_configs table to R2
 
---dry-run: Don't make any actual changes to R2`
+--dry-run: Don't make any actual changes to R2
+
+Commands:
+  sync: Sync grapher configs to R2
+  store-dev-by-slug: Dummy implementation for store-dev-by-slug`
     )
 } else {
-    main(parsedArgs, parsedArgs["dry-run"])
+    main(parsedArgs)
 }