feat(bufferline): allow custom icons for filetypes

lua/lazyvim/config/init.lua

@@ -33,6 +33,9 @@ local defaults = {
     misc = {
       dots = "󰇘",
     },
+    ft = {
+      octo = "",
+    },
     dap = {
       Stopped             = { "󰁕 ", "DiagnosticWarn", "DapStoppedLine" },
       Breakpoint          = " ",

lua/lazyvim/plugins/ui.lua

@@ -92,6 +92,10 @@ return {
             text_align = "left",
           },
         },
+        ---@param opts bufferline.IconFetcherOpts
+        get_element_icon = function(opts)
+          return LazyVim.config.icons.ft[opts.filetype]
+        end,
       },
     },
     config = function(_, opts)