refac: use .yaml instead of .yml extension

defaults/main.yaml

@@ -0,0 +1,48 @@
+---
+
+unix_groups: {}
+#   alice:
+#     gid: 1001
+#     state: present
+#   bob:
+#     gid: 1001
+#     state: absent
+
+unix_users: {}
+#   alice:
+#     state: "present"
+#     name: "Alice"
+#     uid: "1000"
+#     ssh:
+#       config:
+#       - Host: "*"
+#         StrictHostKeyChecking: "no"
+#         UserKnownHostFile: /dev/null
+#       authorized_keys:
+#       - filename: alice@alice-pc.pub
+#         # command: "" # optional
+#       private_keys:
+#       - alice@alice-pc.ed25519.key
+#     home: /home/alice
+#     btrfs: false
+#     netrc:
+#     - machine: hostame.local
+#       login: username
+#       password: password
+#     shell: /bin/bash
+#     shell_rc_files:
+#     - file: "/home/alice/.bashrc.d/docker.bashrc" # absolute or relative path to home dir
+#       aliases:
+#       - key: "dcd"
+#         value: "docker-compose down"
+#       envs:
+#       - export: true
+#         key: "PATH"
+#         value: "${XDG_BIN_DIR}:${PATH}"
+#       functions:
+#       - name: "foo"
+#         value: "echo \"bar\""
+#     group: alice
+#     groups: []
+#     password: ""
+#     email: alice@example.local