feat: add configuration files for aria2 and containers, and update zsh aliases

- Introduce aria2 configuration for RPC and default download directory
- Add containers configuration to suppress compose warning logs
- Update zsh aliases to include a shortcut for Docker using podman

aria2/.config/aria2/aria2.conf

@@ -0,0 +1,4 @@
+enable-rpc = true
+rpc-listen-all = true
+dir = ~/Downloads
+# rpc-secret = your_password

containers/.config/containers/containers.conf

@@ -0,0 +1,2 @@
+[engine]
+compose_warning_logs = false

zsh/.config/zsh/snippets/aliases

@@ -15,3 +15,6 @@ alias ga='git add'
 alias gc='git commit'
 alias gp='git push'
 alias gl='git pull'
+
+# Docker shortcuts
+alias docker='podman'