Added LightClientBootstrap V1 (#3711)

## Issue Addressed

Partially addresses #3651

## Proposed Changes

Adds server-side support for light_client_bootstrap_v1 topic

## Additional Info

This PR, creates each time a bootstrap without using cache, I do not know how necessary a cache is in this case as this topic is not supposed to be called frequently and IMHO we can just prevent abuse by using the limiter, but let me know what you think or if there is any caveat to this, or if it is necessary only for the sake of good practice.


Co-authored-by: Pawan Dhananjay <pawandhananjay@gmail.com>

beacon_node/lighthouse_network/src/config.rs

@@ -130,6 +130,9 @@ pub struct Config {
 
     /// Whether metrics are enabled.
     pub metrics_enabled: bool,
+
+    /// Whether light client protocols should be enabled.
+    pub enable_light_client_server: bool,
 }
 
 impl Default for Config {
@@ -207,6 +210,7 @@ impl Default for Config {
             shutdown_after_sync: false,
             topics: Vec::new(),
             metrics_enabled: false,
+            enable_light_client_server: false,
         }
     }
 }