alacritty: Add pywal color scheme support

Now we can start new terminals in alacritty with our pywal color scheme
of choice.

alacritty/.config/alacritty/alacritty.yml

@@ -1,3 +1,6 @@
+import:
+  - ~/.cache/wal/colors-alacritty.yml
+
 background_opacity: 0.9
 
 window:

alacritty/.config/wal/templates/colors--nodim-alacritty.yml

@@ -0,0 +1,53 @@
+colors:
+
+  primary:
+    background: "{background}"
+    foreground: "{foreground}"
+
+  cursor:
+    text: CellBackground
+    cursor: CellForeground
+
+  vi_mode_cursor:
+    text: CellBackground
+    cursor: CellForeground
+
+  search:
+    matches:
+      foreground: '{color0}'
+      background: '{color15}'
+    focused_match:
+      foreground: CellBackground
+      background: CellForeground
+
+    bar:
+      foreground: '{color8}'
+      background: '{color7}'
+
+  line_indicator:
+    foreground: None
+    background: None
+
+  selection:
+    text: CellBackground
+    background: CellForeground
+
+  normal:
+    black: "{color0}"
+    red: "{color1}"
+    green: "{color2}"
+    yellow: "{color3}"
+    blue: "{color4}"
+    magenta: "{color5}"
+    cyan: "{color6}"
+    white: "{color7}"
+
+  bright:
+    black: "{color8}"
+    red: "{color9}"
+    green: "{color10}"
+    yellow: "{color11}"
+    blue: "{color12}"
+    magenta: "{color13}"
+    cyan: "{color14}"
+    white: "{color15}"

alacritty/.config/wal/templates/colors-alacritty.yml

@@ -0,0 +1,63 @@
+colors:
+
+  primary:
+    background: "{background}"
+    foreground: "{foreground}"
+
+  cursor:
+    text: CellBackground
+    cursor: CellForeground
+
+  vi_mode_cursor:
+    text: CellBackground
+    cursor: CellForeground
+
+  search:
+    matches:
+      foreground: '{color0}'
+      background: '{color15}'
+    focused_match:
+      foreground: CellBackground
+      background: CellForeground
+
+    bar:
+      foreground: '{color8}'
+      background: '{color7}'
+
+  line_indicator:
+    foreground: None
+    background: None
+
+  selection:
+    text: CellBackground
+    background: CellForeground
+
+  normal:
+    black: "{color0}"
+    red: "{color1}"
+    green: "{color2}"
+    yellow: "{color3}"
+    blue: "{color4}"
+    magenta: "{color5}"
+    cyan: "{color6}"
+    white: "{color7}"
+
+  bright:
+    black: "{color8}"
+    red: "{color9}"
+    green: "{color10}"
+    yellow: "{color11}"
+    blue: "{color12}"
+    magenta: "{color13}"
+    cyan: "{color14}"
+    white: "{color15}"
+
+  dim:
+    black: "{color15}"
+    red: "{color9}"
+    green: "{color13}"
+    yellow: "{color11}"
+    blue: "{color12}"
+    magenta: "{color10}"
+    cyan: "{color14}"
+    white: "{color8}"