add alacritty config

.config/alacritty/alacritty.toml

@@ -0,0 +1,12 @@
+[window]
+dynamic_padding = true
+opacity = 0.7
+blur = true
+
+[font]
+normal = { family = "BlexMono Nerd Font Medium", style = "Regular" }
+size = 15
+
+[cursor]
+style = { shape="beam", blinking="on" }
+