Add onboarding docs

Author: Mr3zee

CONTRIBUTING.md

@@ -84,7 +84,6 @@ on how to work with the project.
 
 Contributions are made using Github [pull requests](https://help.github.com/en/articles/about-pull-requests):
 
-[//]: # (TODO change repo link to the repo)
 1. Fork the `kotlinx.rpc` repository and work on your fork.
 2. [Create](https://github.com/kotlin/kotlinx-rpc/compare) a new PR with a request to merge to the **main** branch. 
 3. Ensure that the description is clear and refers to an existing ticket/bug if applicable. 

README.md

@@ -199,10 +199,6 @@ For a working example, see the [sample gRPC project](/samples/grpc-app).
 `kotlinx.rpc` is an official [JetBrains](https://jetbrains.com) product and is primarily developed by the team at JetBrains, with
 contributions from the community.
 
-[//]: # (## Documentation)
-
-[//]: # (TODO: add docs site and most useful links)
-
 ## Support 
 
 Community support is available on the [Kotlin Slack kotlinx-rpc channel](https://kotlinlang.slack.com/archives/C072YJ3Q91V)

compiler-plugin/gradle.properties

@@ -1,5 +1,5 @@
 #
-# Copyright 2023-2024 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
+# Copyright 2023-2025 JetBrains s.r.o and contributors. Use of this source code is governed by the Apache 2.0 license.
 #
 
 kotlin.code.style=official
@@ -29,7 +29,7 @@ kotlinx.rpc.plugin.internalDevelopment=true
 # Add this property to ~/.gradle/gradle.properties to avoid polluting git with unwanted changes
 #kotlinx.rpc.develocity.skipBuildScans=true
 
-# Uncomment to skip adding git tags to Develocity build scan
+# Uncomment to skip adding git tags to Develocity build scan (might be good in docker when there is no git)
 # Add this property to ~/.gradle/gradle.properties to avoid polluting git with unwanted changes
 #kotlinx.rpc.develocity.skipGitTags=true