make alpha.nvim options structure match to all other plugin config options

this was creating confusion among people those who override alpha-nvim config

lua/plugins/configs/alpha.lua

@@ -34,43 +34,42 @@ local function button(sc, txt, keybind)
   }
 end
 
-local options = {}
+local options = {
 
-local ascii = {
-  "   ⣴⣶⣤⡤⠦⣤⣀⣤⠆     ⣈⣭⣿⣶⣿⣦⣼⣆          ",
-  "    ⠉⠻⢿⣿⠿⣿⣿⣶⣦⠤⠄⡠⢾⣿⣿⡿⠋⠉⠉⠻⣿⣿⡛⣦       ",
-  "          ⠈⢿⣿⣟⠦ ⣾⣿⣿⣷    ⠻⠿⢿⣿⣧⣄     ",
-  "           ⣸⣿⣿⢧ ⢻⠻⣿⣿⣷⣄⣀⠄⠢⣀⡀⠈⠙⠿⠄    ",
-  "          ⢠⣿⣿⣿⠈    ⣻⣿⣿⣿⣿⣿⣿⣿⣛⣳⣤⣀⣀   ",
-  "   ⢠⣧⣶⣥⡤⢄ ⣸⣿⣿⠘  ⢀⣴⣿⣿⡿⠛⣿⣿⣧⠈⢿⠿⠟⠛⠻⠿⠄  ",
-  "  ⣰⣿⣿⠛⠻⣿⣿⡦⢹⣿⣷   ⢊⣿⣿⡏  ⢸⣿⣿⡇ ⢀⣠⣄⣾⠄   ",
-  " ⣠⣿⠿⠛ ⢀⣿⣿⣷⠘⢿⣿⣦⡀ ⢸⢿⣿⣿⣄ ⣸⣿⣿⡇⣪⣿⡿⠿⣿⣷⡄  ",
-  " ⠙⠃   ⣼⣿⡟  ⠈⠻⣿⣿⣦⣌⡇⠻⣿⣿⣷⣿⣿⣿ ⣿⣿⡇ ⠛⠻⢷⣄ ",
-  "      ⢻⣿⣿⣄   ⠈⠻⣿⣿⣿⣷⣿⣿⣿⣿⣿⡟ ⠫⢿⣿⡆     ",
-  "       ⠻⣿⣿⣿⣿⣶⣶⣾⣿⣿⣿⣿⣿⣿⣿⣿⡟⢀⣀⣤⣾⡿⠃     ",
-}
-
-options.header = {
-  type = "text",
-  val = ascii,
-  opts = {
-    position = "center",
-    hl = "AlphaHeader",
+  header = {
+    type = "text",
+    val = {
+      "   ⣴⣶⣤⡤⠦⣤⣀⣤⠆     ⣈⣭⣿⣶⣿⣦⣼⣆          ",
+      "    ⠉⠻⢿⣿⠿⣿⣿⣶⣦⠤⠄⡠⢾⣿⣿⡿⠋⠉⠉⠻⣿⣿⡛⣦       ",
+      "          ⠈⢿⣿⣟⠦ ⣾⣿⣿⣷    ⠻⠿⢿⣿⣧⣄     ",
+      "           ⣸⣿⣿⢧ ⢻⠻⣿⣿⣷⣄⣀⠄⠢⣀⡀⠈⠙⠿⠄    ",
+      "          ⢠⣿⣿⣿⠈    ⣻⣿⣿⣿⣿⣿⣿⣿⣛⣳⣤⣀⣀   ",
+      "   ⢠⣧⣶⣥⡤⢄ ⣸⣿⣿⠘  ⢀⣴⣿⣿⡿⠛⣿⣿⣧⠈⢿⠿⠟⠛⠻⠿⠄  ",
+      "  ⣰⣿⣿⠛⠻⣿⣿⡦⢹⣿⣷   ⢊⣿⣿⡏  ⢸⣿⣿⡇ ⢀⣠⣄⣾⠄   ",
+      " ⣠⣿⠿⠛ ⢀⣿⣿⣷⠘⢿⣿⣦⡀ ⢸⢿⣿⣿⣄ ⣸⣿⣿⡇⣪⣿⡿⠿⣿⣷⡄  ",
+      " ⠙⠃   ⣼⣿⡟  ⠈⠻⣿⣿⣦⣌⡇⠻⣿⣿⣷⣿⣿⣿ ⣿⣿⡇ ⠛⠻⢷⣄ ",
+      "      ⢻⣿⣿⣄   ⠈⠻⣿⣿⣿⣷⣿⣿⣿⣿⣿⡟ ⠫⢿⣿⡆     ",
+      "       ⠻⣿⣿⣿⣿⣶⣶⣾⣿⣿⣿⣿⣿⣿⣿⣿⡟⢀⣀⣤⣾⡿⠃     ",
+    },
+    opts = {
+      position = "center",
+      hl = "AlphaHeader",
+    },
   },
-}
 
-options.buttons = {
-  type = "group",
-  val = {
-    button("SPC f f", "  Find File  ", ":Telescope find_files<CR>"),
-    button("SPC f o", "  Recent File  ", ":Telescope oldfiles<CR>"),
-    button("SPC f w", "  Find Word  ", ":Telescope live_grep<CR>"),
-    button("SPC b m", "  Bookmarks  ", ":Telescope marks<CR>"),
-    button("SPC t h", "  Themes  ", ":Telescope themes<CR>"),
-    button("SPC e s", "  Settings", ":e $MYVIMRC | :cd %:p:h <CR>"),
-  },
-  opts = {
-    spacing = 1,
+  buttons = {
+    type = "group",
+    val = {
+      button("SPC f f", "  Find File  ", ":Telescope find_files<CR>"),
+      button("SPC f o", "  Recent File  ", ":Telescope oldfiles<CR>"),
+      button("SPC f w", "  Find Word  ", ":Telescope live_grep<CR>"),
+      button("SPC b m", "  Bookmarks  ", ":Telescope marks<CR>"),
+      button("SPC t h", "  Themes  ", ":Telescope themes<CR>"),
+      button("SPC e s", "  Settings", ":e $MYVIMRC | :cd %:p:h <CR>"),
+    },
+    opts = {
+      spacing = 1,
+    },
   },
 }