Logo (Builtin): add MainsailOS

Ref: https://github.com/dylanaraps/neofetch/pull/2407

CHANGELOG.md

@@ -64,6 +64,7 @@ Logo:
 * Add Chimera Linux
 * Add EndeavourSmall
 * Add Xenia
+* Add MainsailOS
 
 # 2.1.0
 

src/logo/ascii/mainsailos.txt

@@ -0,0 +1,18 @@
+                           -
+                          *%:
+                        :%%%#
+                       =%%%%%-
+                      *%%%%%%#
+                    :#%%%%%%%#.
+                   -%%%%%%%%+
+                  *%%%%%%%%-    :
+                .#%%%%%%%#.    *%=
+               -%%%%%%%%+    :#%%%*
+              +%%%%%%%%-    =%%%%%%#.
+            .#%%%%%%%#.    *%%%%%%%%:
+           -%%%%%%%%*    :#%%%%%%%#.
+          +%%%%%%%%-    =%%%%%%%%+    :%*.
+        .#%%%%%%%#:    *%%%%%%%%-    +%%%%*:
+       :%%%%%%%%*    :#%%%%%%%#.   .*%%%%%%%*
+      +%%%%%%%%=    -%%%%%%%%+    :%%%%%%%%*
+    .#%%%%%%%%:    *%%%%%%%%-    =%%%%%%%%=

src/logo/ascii/mainsailos_small.txt

@@ -0,0 +1,7 @@
+          -:
+         +%*
+       .#%%+
+      -%%%: +=
+     +%%#..#%%-
+   .#%%+ -%%%- +=
+  -%%%- +%%#..#%%+

src/logo/builtin.c

@@ -2295,6 +2295,23 @@ static const FFlogo M[] = {
         .colorKeys = FF_COLOR_FG_YELLOW,
         .colorTitle = FF_COLOR_FG_GREEN,
     },
+    // MainsailOS
+    {
+        .names = {"MainsailOS"},
+        .lines = FASTFETCH_DATATEXT_LOGO_MAINSAILOS,
+        .colors = {
+            FF_COLOR_FG_RED,
+        },
+    },
+    // MainsailOSSmall
+    {
+        .names = {"MainsailOS_small"},
+        .type = FF_LOGO_LINE_TYPE_SMALL_BIT,
+        .lines = FASTFETCH_DATATEXT_LOGO_MAINSAILOS_SMALL,
+        .colors = {
+            FF_COLOR_FG_RED,
+        },
+    },
     // Mageia
     {
         .names = {"Mageia"},