feat: custom grub bootloader - bee branding, 5s auto-boot, no splash

iso/builder/config/bootloaders/grub-pc/config.cfg

@@ -0,0 +1,27 @@
+set default=0
+set timeout=5
+
+if [ x$feature_default_font_path = xy ] ; then
+    font=unicode
+else
+    font=$prefix/unicode.pf2
+fi
+
+if loadfont $font ; then
+    set gfxmode=800x600
+    set gfxpayload=keep
+    insmod efi_gop
+    insmod efi_uga
+    insmod video_bochs
+    insmod video_cirrus
+else
+    set gfxmode=auto
+    insmod all_video
+fi
+
+insmod gfxterm
+insmod png
+
+source /boot/grub/theme.cfg
+
+terminal_output gfxterm

iso/builder/config/bootloaders/grub-pc/grub.cfg

@@ -0,0 +1,17 @@
+source /boot/grub/config.cfg
+
+menuentry "Bee Hardware Audit" {
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@
+    initrd  @INITRD_LIVE@
+}
+
+menuentry "Bee Hardware Audit (fail-safe)" {
+    linux   @KERNEL_LIVE@ @APPEND_LIVE@ memtest noapic noapm nodma nomce nolapic nosmp vga=normal
+    initrd  @INITRD_LIVE@
+}
+
+if [ "${grub_platform}" = "efi" ]; then
+    menuentry "UEFI Firmware Settings" {
+        fwsetup
+    }
+fi

iso/builder/config/bootloaders/grub-pc/live-theme/theme.txt

@@ -0,0 +1,50 @@
+title-color: "#ffffff"
+title-font: "Unifont Regular 16"
+title-text: "Bee Hardware Audit"
+message-font: "Unifont Regular 16"
+terminal-font: "Unifont Regular 16"
+
+#help bar at the bottom
++ label {
+        top = 100%-50
+        left = 0
+        width = 100%
+        height = 20
+        text = "@KEYMAP_SHORT@"
+        align = "center"
+        color = "#ffffff"
+        font = "Unifont Regular 16"
+}
+
+#boot menu
++ boot_menu {
+        left = 10%
+        width = 80%
+        top = 30%
+        height = 70%-80
+        item_color = "#a8a8a8"
+        item_font = "Unifont Regular 16"
+        selected_item_color= "#ffffff"
+        selected_item_font = "Unifont Regular 16"
+        item_height = 16
+        item_padding = 0
+        item_spacing = 4
+        icon_width = 0
+        icon_heigh = 0
+        item_icon_space = 0
+}
+
+#progress bar
++ progress_bar {
+        id = "__timeout__"
+        left = 15%
+        top = 100%-80
+        height = 16
+        width = 70%
+        font = "Unifont Regular 16"
+        text_color = "#000000"
+        fg_color = "#ffffff"
+        bg_color = "#a8a8a8"
+        border_color = "#ffffff"
+        text = "@TIMEOUT_NOTIFICATION_LONG@"
+}

iso/builder/config/bootloaders/grub-pc/theme.cfg

@@ -0,0 +1,9 @@
+set color_normal=light-gray/black
+set color_highlight=white/dark-gray
+
+if [ -e /boot/grub/splash.png ]; then
+    set theme=/boot/grub/live-theme/theme.txt
+else
+    set menu_color_normal=cyan/black
+    set menu_color_highlight=white/dark-gray
+fi