Update readme. (#359)

* Update readme.

* Fix links.

Author: tomusdrw

README.md

@@ -3,7 +3,25 @@
 - **Production @ https://pvm.fluffylabs.dev**
 - Beta @ https://pvm-debugger.netlify.app/
 
-## Requirements
+## PVMs support
+
+We have the following PVMs integrated by default.
+
+- [x] [typeberry](https://github.com/fluffylabs/typeberry) - TypeScript implementation (Private)
+- [x] [anan-as](https://github.com/tomusdrw/anan-as) - AssemblyScript implementation (as WASM)
+- [x] [polkavm](https://github.com/paritytech/polkavm) - Rust implementation (as WASM)
+
+There are few ways how you can add your own PVM to execute the code.
+
+1. Upload WASM (supported interfaces: [wasm-bindgen](https://github.com/FluffyLabs/pvm-debugger/blob/main/src/packages/web-worker/wasmBindgenShell.ts#L4), [assembly script](https://github.com/FluffyLabs/pvm-debugger/blob/main/src/packages/web-worker/wasmAsShell.ts#L5), [Go](https://github.com/FluffyLabs/pvm-debugger/blob/main/src/packages/web-worker/wasmGoShell.ts#L5))
+2. Point to an URL with metadata file (details in [#81](https://github.com/FluffyLabs/pvm-debugger/issues/81); example [pvm-metadata.json](https://github.com/tomusdrw/polkavm/blob/gh-pages/pvm-metadata.json))
+3. Connect to WebSocket interface: [example & docs](https://github.com/wkwiatek/pvm-ws-rpc).
+
+Details about the API requirements can be found in [#81](https://github.com/FluffyLabs/pvm-debugger/issues/81)
+
+## Development
+
+### Requirements
 
 ```bash
 $ node --version

src/components/PvmSelect/index.tsx

@@ -243,7 +243,11 @@ export const PvmSelect = () => {
         </span>
         <span className="text-white text-[11px]">
           Learn to add your PVM implementation here{" "}
-          <a href="https://github.com/FluffyLabs/pvm-debugger/issues/81" target="_blank" className="text-brand">
+          <a
+            href="https://github.com/FluffyLabs/pvm-debugger?tab=readme-ov-file#pvms-support"
+            target="_blank"
+            className="text-brand"
+          >
             <ExternalLink className="inline w-4 mb-1" />
           </a>
         </span>