[commands] conan new default template (#4356)

* Added conan new default info

* wip

Author: franramirez688

reference/commands/new.rst

@@ -20,6 +20,13 @@ Note that each template has some required and some [optional] user-defined varia
 
 The available templates are:
 
+- *default* (no argument is required):
+  Creates a simple and empty CMake consumer recipe. The use case would be an user having
+  a local CMakeLists.txt and the sources, and want to build them likely using requirements
+  through Conan:
+
+  Its variables are: name, version, [requires1, requires2, ...], [tool_requires1, tool_requires2, ...]
+
 - **basic**:
   Creates a simple recipe with some example code and helpful comments,
   and is a good starting point to avoid writing boilerplate code.
@@ -130,6 +137,18 @@ By default, all ``name`` and ``version`` variables are set to ``mypkg`` and ``0.
 Examples
 --------
 
+.. code-block:: text
+
+    $ conan new
+
+Generates a simple CMake consumer *conanfile.py*. Notice that neither the CMakeLists.txt nor the sources are created.
+
+.. note::
+
+    You could be interested in the :ref:`conan require<reference_commands_require>` command to add some
+    remote/local requirements to your recipe.
+
+
 .. code-block:: text
 
     $ conan new basic