Add changes for work environment

Signed-off-by: Severin Kaderli <severin@kaderli.dev>

system/.config/custom/aliases

@@ -27,13 +27,27 @@ alias grep="rg -n"
 alias cat="bat"
 
 # Aliases to folders
-alias pj="cd ~/projects"
-alias dl="cd ~/downloads"
-alias doc="cd ~/documents"
+if [ -d "${HOME}/projects" ]; then
+    alias pj="cd ${HOME}/projects"
+fi
+
+if [ -d "${HOME}/downloads" ]; then
+    alias dl="cd ${HOME}/downloads"
+fi
+
+if [ -d "${HOME}/documents" ]; then
+    alias doc="cd ${HOME}/documents"
+fi
 
 # Alias for opening my code editor
 alias e="code"
 
+# Aliases for todo list management
 alias t='task todo'
 alias ta='task add'
-alias td='task done'
+alias td='task done'
+
+# Work aliases
+if [ -d "${HOME}/work/tools/dde" ]; then
+    alias dde='make -f "${HOME}/work/tools/dde/Makefile"'
+fi