Add Kotlin LSP plugin with inline lspServers configuration

[muhsinali]

Summary

Add the pre alpha official Kotlin LSP plugin to the official marketplace following the existing conventions set out in a previous PR for pre-existing LSP plugins. This enables the LSP plugin recommendation feature in Claude Code to detect the Kotlin LSP plugin alongside existing LSP plugins directly from the marketplace.

LSP plugin added

Plugin	Language	Extensions	Binary
kotlin-lsp	Kotlin	.kt, .kts	kotlin-lsp

Implementation

Following the existing conventions set out in a previous PR for pre-existing LSP plugins:

• The plugin uses strict: false since it only provides LSP configuration
• LSP config is inline in the marketplace entry, not in separate .lsp.json files
• Plugin will be recommended when users edit files with matching extensions AND have the kotlin-lsp binary installed

Test plan

• claude plugin validate . passes
• Test with --plugin-dir pointing to this marketplace
• Verify LSP activates for Kotlin files when kotlin-lsp binary is installed (see screenshot below)

Example usage