Set breakpoint icons and their highlight colors (nvim-lua#1194)

* feat: Set breakpoint icons and their highlight colors

* docs: Delete reference URL (written in PR)
feat: "Break" and "Stop" arguments of vim.api.nvim_set_hl are changed because they are too common nouns
feat: Comment out changes regarding diagnostic symbols so that only those who want to change them can do so

---------

Co-authored-by: name <email>

lua/kickstart/plugins/debug.lua

@@ -89,6 +89,18 @@ return {
       },
     }
 
+    -- Change breakpoint icons
+    -- vim.api.nvim_set_hl(0, 'DapBreak', { fg = '#e51400' })
+    -- vim.api.nvim_set_hl(0, 'DapStop', { fg = '#ffcc00' })
+    -- local breakpoint_icons = vim.g.have_nerd_font
+    --     and { Breakpoint = '', BreakpointCondition = '', BreakpointRejected = '', LogPoint = '', Stopped = '' }
+    --   or { Breakpoint = '●', BreakpointCondition = '⊜', BreakpointRejected = '⊘', LogPoint = '◆', Stopped = '⭔' }
+    -- for type, icon in pairs(breakpoint_icons) do
+    --   local tp = 'Dap' .. type
+    --   local hl = (type == 'Stopped') and 'DapStop' or 'DapBreak'
+    --   vim.fn.sign_define(tp, { text = icon, texthl = hl, numhl = hl })
+    -- end
+
     dap.listeners.after.event_initialized['dapui_config'] = dapui.open
     dap.listeners.before.event_terminated['dapui_config'] = dapui.close
     dap.listeners.before.event_exited['dapui_config'] = dapui.close