AK+Everywhere: Stop including Vector.h from StringView.h

Preparation for using Error.h from Vector.h. This required moving some
things out of line.

Userland/Libraries/LibGfx/BitmapFont.h

@@ -12,6 +12,7 @@
 #include <AK/RefPtr.h>
 #include <AK/String.h>
 #include <AK/Types.h>
+#include <AK/Vector.h>
 #include <LibGfx/Font.h>
 #include <LibGfx/Size.h>
 

Userland/Libraries/LibGfx/Color.cpp

@@ -311,6 +311,30 @@ Optional<Color> Color::from_string(StringView const& string)
     return Color(r.value(), g.value(), b.value(), a.value());
 }
 
+Vector<Color> Color::shades(u32 steps, float max) const
+{
+    float shade = 1.f;
+    float step = max / steps;
+    Vector<Color> shades;
+    for (u32 i = 0; i < steps; i++) {
+        shade -= step;
+        shades.append(this->darkened(shade));
+    }
+    return shades;
+}
+
+Vector<Color> Color::tints(u32 steps, float max) const
+{
+    float shade = 1.f;
+    float step = max / steps;
+    Vector<Color> tints;
+    for (u32 i = 0; i < steps; i++) {
+        shade += step;
+        tints.append(this->lightened(shade));
+    }
+    return tints;
+}
+
 }
 
 bool IPC::encode(IPC::Encoder& encoder, Color const& color)

Userland/Libraries/LibGfx/Color.h

@@ -242,29 +242,8 @@ public:
         return Color(min(255, (int)((float)red() * amount)), min(255, (int)((float)green() * amount)), min(255, (int)((float)blue() * amount)), alpha());
     }
 
-    Vector<Color> shades(u32 steps, float max = 1.f) const
-    {
-        float shade = 1.f;
-        float step = max / steps;
-        Vector<Color> shades;
-        for (u32 i = 0; i < steps; i++) {
-            shade -= step;
-            shades.append(this->darkened(shade));
-        }
-        return shades;
-    }
-
-    Vector<Color> tints(u32 steps, float max = 1.f) const
-    {
-        float shade = 1.f;
-        float step = max / steps;
-        Vector<Color> tints;
-        for (u32 i = 0; i < steps; i++) {
-            shade += step;
-            tints.append(this->lightened(shade));
-        }
-        return tints;
-    }
+    Vector<Color> shades(u32 steps, float max = 1.f) const;
+    Vector<Color> tints(u32 steps, float max = 1.f) const;
 
     constexpr Color inverted() const
     {

Userland/Libraries/LibGfx/Filters/FastBoxBlurFilter.cpp

@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/Vector.h>
 #include <LibGfx/Filters/FastBoxBlurFilter.h>
 
 namespace Gfx {