minor: Add user facing command for reloading proc-macros in VSCode

docs/dev/lsp-extensions.md

@@ -422,6 +422,16 @@ Returns internal status message, mostly for debugging purposes.
 
 Reloads project information (that is, re-executes `cargo metadata`).
 
+## Reload proc-macros
+
+**Method:** `rust-analyzer/reloadProcMacros`
+
+**Request:** `null`
+
+**Response:** `null`
+
+Rebuilds build scripts and proc-macros, and runs the build scripts to reseed the build data.
+
 ## Server Status
 
 **Experimental Client Capability:** `{ "serverStatusNotification": boolean }`

editors/code/package.json

@@ -199,6 +199,11 @@
                 "title": "Reload workspace",
                 "category": "rust-analyzer"
             },
+            {
+                "command": "rust-analyzer.reloadProcMacros",
+                "title": "Reload proc macros and build scripts",
+                "category": "rust-analyzer"
+            },
             {
                 "command": "rust-analyzer.addProject",
                 "title": "Add current file's crate to workspace",