Feat server advertisement

[akirilov]

New features:

• Added the ability to manually set the advertised server IP to allow "Server Visible" functionality with a reverse proxy
• NOTE: this requires that ServerVisible is set to False, otherwise the game will ALSO advertise the (wrong) IP

[Copilot]

Pull Request Overview

This PR adds server advertisement functionality to allow the application to advertise servers behind reverse proxies. The feature introduces a new command-line flag --OverrideAdvertisedIp that sets a custom IP address for server advertisement while disabling the built-in server visibility to prevent conflicts.

• Added OverrideAdvertisedIp configuration option with getter/setter functions and persistence
• Implemented automatic server advertisement service that posts server info to a discovery endpoint
• Added command-line flag support for setting the override IP address

Reviewed Changes

Copilot reviewed 8 out of 8 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/core/loader/cmdargs.go	Adds command-line flag parsing for override advertised IP
src/config/vars.go	Declares new OverrideAdvertisedIp configuration variable
src/config/setters.go	Implements setter function for the override IP configuration
src/config/getters.go	Implements getter function for the override IP configuration
src/config/config.go	Adds JSON serialization support and configuration loading for override IP
src/advertiser/advertiser.go	New advertiser service that handles server advertisement functionality
server.go	Integrates advertiser service startup in main application
.vscode/launch.json	Adds debug configuration for testing the new override IP feature

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[JacksonTheMaster]

See my comments

[Copilot]

Pull Request Overview

Copilot reviewed 12 out of 12 changed files in this pull request and generated 4 comments.

Comments suppressed due to low confidence (1)

src/config/config.go:1

• Typo in comment: 'secconds' should be 'seconds'.

package config

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[JacksonTheMaster]

reviewed, merged as discussed in VC