Logo (Builtin): add Opak

Fix #1070

src/logo/ascii/opak.txt

@@ -0,0 +1,13 @@
+      .':ldkOOOOkxo:,.
+    .:d0KKXXXXXXXXXXKkl,
+  .;xOOO0000KKKKXXXXXXX0l.
+ .cxxxkkkkOOO0000KKKKXXXXx'
+ ;ool;,,,,;coxkOOOO0000KKKd.
+.clc'.........:oxkkkkOOOO0O,
+.ccc:ccclc:,....,:oddxxdxkO;
+ cllllccccccc;'........'lxx.
+ 'ooooolllllccc:;,''',,coo,
+  ,ddddooooollllllccccccl'
+    cxxxdddddooooollllc;
+      ,dxxxxxddddddol.
+          .';::,.

src/logo/builtin.c

@@ -2957,6 +2957,12 @@ static const FFlogo O[] = {
             FF_COLOR_FG_LIGHT_BLACK,
         }
     },
+    // Opak
+    {
+        .names = {"Opak"},
+        .lines = FASTFETCH_DATATEXT_LOGO_OPAK,
+        .colors = {}, // #1070
+    },
     // OpenKylin
     {
         .names = {"openkylin", "open-kylin"},