feat: initial push with a fully separated and organized user configuration for AstroNvim v3

heirline/icon_highlights.lua

@@ -0,0 +1,9 @@
+-- Customize if icons should be highlighted
+return {
+  breadcrumbs = false, -- LSP symbols in the breadcrumbs
+  file_icon = {
+    winbar = false, -- Filetype icon in the winbar inactive windows
+    statusline = true, -- Filetype icon in the statusline
+    tabline = true, -- Filetype icon in the tabline
+  },
+}