Add better movement and LSP-related help

init.lua

@@ -549,6 +549,9 @@ require('lazy').setup({
           --  For example, in C this would take you to the header.
           map('gD', vim.lsp.buf.declaration, '[G]oto [D]eclaration')
 
+          map('<leader>ch', vim.lsp.buf.hover, '[C]ode [H]over item')
+          map('<leader>cd', vim.diagnostic.open_float, '[C]ode [D]iagnostic for current line')
+
           -- The following two autocommands are used to highlight references of the
           -- word under your cursor when your cursor rests there for a little while.
           --    See `:help CursorHold` for information about when this is executed