Forge Lsp

Added forge lsp to start Solar's Solidity language server without installing the standalone solar executable. The server follows Forge's normal CLI flow, and its default flycheck uses the running Forge executable while keeping protocol output isolated on stdout. Updated the Forge lint integration for the newer Solar APIs, and ensured compatible clients receive diagnostics through exactly one delivery method. The embedded server also honors the selected Forge profile when indexing workspaces and running its default flychecks.