[RFE] Allow multiple groups creation.

Adding an option `groups` to create multiple groups in one operation.
Adding tests (present/absent/external/nonposix) with server and
client context.
Simple example of `groups` option:
```
tasks:
- name: Ensure 2 groups are present
  ipagroup:
    ipaadmin_password: SomeADMINpassword
    groups:
    - name: group1
    - name: group2
```

Signed-off-by: Denis Karpelevich <dkarpele@redhat.com>

tests/group/create_groups_json.yml

@@ -0,0 +1,13 @@
+---
+- name: Create groups.json
+  hosts: localhost
+
+  tasks:
+  - name: Check if groups.json exists
+    ansible.builtin.stat:
+      path: groups.json
+    register: register_stat_groups
+
+  - name: Create groups.json
+    ansible.builtin.command: /bin/bash groups.sh 500
+    when: not register_stat_groups.stat.exists