win_git_config: Add support

[mathstuf]

SUMMARY

Port community.general.git_config to Windows.

ISSUE TYPE

• Feature Idea

COMPONENT NAME

win_git_config

ADDITIONAL INFORMATION

As with git_config, using a command is error-prone and doesn't support check very well.

- name: Set `core.longpaths`
  become: true
  become_method: runas
  become_flags: logon_flags=with_profile
  ansible.windows.win_git_config:
    name: core.longpaths
    scope: "file"
    file: "c:/Users/{{ gitlab_runner_user }}/.gitconfig"
    value: "true"
  vars:
    ansible_become_user: '{{ gitlab_runner_user }}'
    ansible_become_pass: '{{ windows_svc_user_passwd }}'