feat: get addresses from frontend

Author: alcueca

_sidebar.md

@@ -9,7 +9,6 @@
     <!-- - [Governance](users/governance.md "Yield Protocol Docs | Users Governance") -->
 - [Developers](/developers/ "Yield Protocol Docs | Developers")
     - [Addresses](/developers/addresses/ "Yield Protocol Docs | Addresses")
-        - [Mainnet](/developers/addresses/mainnet.md "Yield Protocol Docs | Mainnet")
     - [Smart Contract Overview](/developers/smart_contracts_overview.md "Yield Protocol Docs | Smart Contract Overview")
     - [Governance](/developers/governance.md "Yield Protocol Docs | Governance")
     - [Emergencies](/developers/emergencies.md "Yield Protocol Docs | Emergencies")

assets/addresses.png

@@ -0,0 +1,7 @@
+# Contract Addresses and Asset Identifiers
+
+All contract addresses and identifiers can be obtained through the "Download" button on the lower right corner of the application.
+
+<figure class="image" align = "center">
+  <img src="assets/png.png" alt="download button" title="download addresses and identifiers">
+</figure>