Add Ballerina LSP implementation

[xlight05]

Summary

Add Ballerina LSP plugin to the official marketplace with inline lspServers configuration and detailed initialization options. This enables Claude Code to provide full language intelligence for Ballerina files when the Ballerina distribution is installed.

LSP plugin added

Plugin	Language	Extensions	Binary
ballerina-lsp	Ballerina	.bal	bal start-language-server

Implementation

• Plugin maintained by WSO2 (original Ballerina authors)
• Uses strict: false since it only provides LSP configuration
• Plugin will be recommended when users edit .bal files AND have Ballerina distribution installed
• Follows the same minimal structure as other LSP plugins (README.md only)

Test plan

• claude plugin validate . passes
• Test with --plugin-dir pointing to this marketplace
• Verify LSP activates for .bal files with Ballerina installed

🤖 Generated with Claude Code