feat(direnv): Add aliases feature to direnv

Thanks to this github issue:
https://github.com/direnv/direnv/issues/73#issuecomment-1192448475

There is now a possibility to create aliases on fly

Signed-off-by: Jeremy MAURO <jeremy.mauro@gmail.com>

dotfiles/config/direnv/lib/aliases.sh

@@ -0,0 +1,16 @@
+export_alias() {
+  local name=$1
+  shift
+  local alias_dir=$PWD/.direnv/aliases
+  local target="$alias_dir/$name"
+  local oldpath="$PATH"
+  mkdir -p "$alias_dir"
+  if ! [[ ":$PATH:" == *":$alias_dir:"* ]]; then
+    PATH_add "$alias_dir"
+  fi
+
+  echo "#!/usr/bin/env bash" > "$target"
+  echo "PATH=\"$oldpath\"" >> "$target"
+  echo "$@" >> "$target"
+  chmod +x "$target"
+}