Add Mainnet Endpoints by NodeStake (#1233)

* Add Mainnet Endpoints by NodeStake

* Update mainnet.md

nodes/mainnet.md

@@ -99,20 +99,23 @@ RPCs for DA nodes to initialise or start your celestia-node to Mainnet Beta with
 - `public-celestia-rpc.numia.xyz`
 - `celestia-rpc.mesa.newmetric.xyz`
 - `rpc.lunaroasis.net`
+- `rpc.celestia.nodestake.top`
 
 ### API endpoints
 
 - `public-celestia-lcd.numia.xyz`
 - `celestia-rest.mesa.newmetric.xyz`
 - `api.celestia.pops.one`
 - `api.lunaroasis.net`
+- `api.celestia.nodestake.top`
 
 ### gRPC endpoints
 
 - `public-celestia-grpc.numia.xyz`
 - `celestia-grpc.mesa.newmetric.xyz`
 - `grpc.celestia.pops.one`
 - `grpc.lunaroasis.net:443`
+- `grpc.celestia.nodestake.top`
 
 ## Explorers
 
@@ -122,6 +125,7 @@ There are multiple explorers you can use for Mainnet Beta:
 - [https://celestiascan.com](https://celestiascan.com)
 - [https://mintscan.io/celestia](https://mintscan.io/celestia)
 - [https://celestia.explorers.guru](https://celestia.explorers.guru)
+- [https://explorer.nodestake.top/celestia](https://explorer.nodestake.top/celestia)
 
 ## Network upgrades