add starkup installation method (#2030)

Closes #2019

Author: DelevoXDG

website/.vitepress/components/home/Download.vue

@@ -18,6 +18,7 @@ const platform = computed(() => {
 });
 
 const QUICK = `curl --proto '=https' --tlsv1.2 -sSf https://docs.swmansion.com/scarb/install.sh | sh`;
+const STARKUP = `curl --proto '=https' --tlsv1.2 -sSf https://sh.starkup.dev | sh`;
 const ASDF = `
 asdf plugin add scarb
 asdf install scarb latest
@@ -32,9 +33,21 @@ asdf set -u scarb latest
         Run the following in your terminal, then follow the onscreen
         instructions
       </h2>
-      <div>
+      <div class="installation-method">
         <h3>
           Install via
+          <a
+            href="https://github.com/software-mansion/starkup"
+            rel="noreferrer"
+            target="_blank"
+            >starkup</a
+          >
+        </h3>
+        <Snippet :src="STARKUP" lang="shell" />
+      </div>
+      <div class="installation-method">
+        <h3>
+          Or via
           <a href="https://asdf-vm.com/" rel="noreferrer" target="_blank"
             >asdf</a
           >
@@ -81,6 +94,10 @@ h3 {
   text-align: center;
 }
 
+.installation-method {
+  margin-bottom: 1.5rem;
+}
+
 .download-unix > .notes {
   font-size: 0.8em;
   margin-bottom: 0;

website/download.md

@@ -21,6 +21,23 @@ If you are not sure if you have Scarb installed or not, you can run `scarb --ver
 
 To download Git dependencies, Scarb requires a Git executable to be available in the `PATH` environment variable.
 
+## Install via starkup installation script
+
+Starkup is a tool that helps you install all the essential tools for Cairo development, including Scarb.
+This method only works on macOS and Linux.
+
+Run the following in your terminal, then follow the onscreen instructions:
+
+```shell
+curl --proto '=https' --tlsv1.2 -sSf https://sh.starkup.dev | sh
+```
+
+Starkup uses asdf under the hood and will install it if not already present.
+For more information on asdf, including how to manage and switch between different Scarb versions, see the [Install via asdf](#install-via-asdf) section below.
+In addition to Scarb, Starkup also installs other useful tools, including [Starknet Foundry](https://github.com/starknet-community-team/starknet-foundry), [Universal Sierra Compiler](https://github.com/software-mansion/universal-sierra-compiler), [Cairo Profiler](https://github.com/software-mansion/cairo-profiler), [Cairo Coverage](https://github.com/software-mansion/cairo-coverage), [CairoLS](https://github.com/software-mansion/cairols) VSCode extension.
+
+Check out the [Starkup repository on GitHub](https://github.com/software-mansion/starkup) for more information.
+
 ## Install via asdf
 
 asdf is a CLI tool that can manage multiple language runtime versions on a per-project basis.