refactor: restrict RemoteServers struct and field visibility

[nadin-Starkware]

Stack:

• refactor: restrict RemoteServers struct and field visibility #2125 ⬅
• refactor: refactor run_component_servers function #2124
• feat: support remote servers execution #2047

⚠️ Part of a stack created by spr. Do not merge manually using the UI - doing so may have unexpected results.

[reviewable-StarkWare]

This change is 

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Please upload report for BASE (spr/main/485ed888@a015c8c). Learn more about missing BASE report.

Files with missing lines	Patch %	Lines
crates/starknet_sequencer_node/src/servers.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@                 Coverage Diff                 @@
##             spr/main/485ed888   #2125   +/-   ##
===================================================
  Coverage                     ?   5.93%           
===================================================
  Files                        ?     263           
  Lines                        ?   30622           
  Branches                     ?   30622           
===================================================
  Hits                         ?    1816           
  Misses                       ?   28732           
  Partials                     ?      74           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.