add file/dir permission option to config

[kozmod]

current realization create files and dirs with 0777 (all can read/write/search) as default permission

-rwxr-xr-x     1  user  grp  416 Jan 16 08:05 Makefile
drwxrwxrwx  2 user  grp   64 Jan 16 08:05 api

need to add an opportunity to set permissions of generated files and dirs

config example:

dir:
  - internal/client # 1️⃣
  - path: pkg/somedir # 2️⃣
    perm: 0660

files:
  - path: project/Dockerfile # 3️⃣
    perm: 0755
    template: false
    get:
      url: "{{ .vars.REPO_2_FILE_PATH }}Dockerfile{{ .vars.REPO_2_SUFFIX }}"

1️⃣ declaration of recursive dirs creation (mkdir -p) with 0777 permissions
2️⃣ declaration of recursive dirs creation with setting 0660 permissions to the last dir (somedir )
3️⃣ declaration of recursive dirs creation with setting 0755 permissions to the file (Dockerfile )