feat: rounded borders on lsp hover preview

lua/plugins/nvim-lspconfig.lua

@@ -228,6 +228,16 @@ return { -- LSP Configuration & Plugins
                     -- by the server configuration above. Useful when disabling
                     -- certain features of an LSP (for example, turning off formatting for tsserver)
                     server.capabilities = vim.tbl_deep_extend('force', {}, capabilities, server.capabilities or {})
+
+                    -- LSP settings (for overriding per client)
+                    local handlers = {
+                        ["textDocument/hover"] = vim.lsp.with(vim.lsp.handlers.hover, { border = "rounded" }),
+                        ["textDocument/signatureHelp"] = vim.lsp.with(vim.lsp.handlers.signature_help,
+                            { border = "rounded" }),
+                    }
+
+                    server.handlers = handlers
+
                     require('lspconfig')[server_name].setup(server)
                 end,
             },