Create a basic config for alacritty

Create a basic configuration for alacritty. We create a minimal
configuration file which just imports the "style" configuration. In
the style configuration we configure the font and the color of the
cursor.

.config/alacritty/alacritty.toml

@@ -0,0 +1,3 @@
+import = [
+       "~/.config/alacritty/style.toml",
+]

.config/alacritty/style.toml

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+[font]
+normal = { family = "NimbusMonoPS", style = "Regular" }
+size = 10
+
+[colors]
+cursor = { cursor = "#00aa00" }

.gitignore.d/alacritty

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+*
+!/.config
+!/.config/alacritty
+!/.config/alacritty/alacritty.toml
+!/.config/alacritty/style.toml
+!/.gitignore.d
+!/.gitignore.d/alacritty