Now that autotools has been removed generate a meson project template in
gst-project-maker.
There are some differences with the autotools project
1. gstreamer-controller-1.0 is not added to the default dependencies.
2. The '-Wall' option is not set explicitly, meson can handle that.
3. The flags in GST_PLUGIN_LDFLAGS have not been ported to meson as
they are not necessary anymore.
The generated project requires meson 0.53.0 for the 'fs' module. It's up
to the user to remove that part in case compatibility with older
versions of meson is desired.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-bad/-/merge_requests/184>
Create a tools directory for an application. Add source code
stubs to allow the project to compile and pass make distcheck.
Add notes in source code to tell the user how to create plugin
or app code using the other -maker scripts.
This is a replacement for gst-template that creates an entire
autotools project (customized to package name), and populates
it with the source for a GStreamer plugin (but no plugin features,
those come from gst-element-maker). Fixes: #665727.
