Move templates outside the source .mk filestemplates

Templates now no longer use Make variables for substitution
but instead replace strings with their equivalent:

  template_name: Corresponds to n=template_name
  project_name:  Corresponds to $(PROJECT) or in=project_name

This allows defining templates outside of Makefiles. For
example an external plugin could define their templates
in templates/my_template.erl and then have the following
in the included Makefile:

  tpl_my_template = $(file < $(THIS)/templates/my_template.erl)

By default the created file will be in src/template_name.erl.
This can be overriden with the tplp_* variable:

  tplp_my_template = src/model/my_template.erl

Substitution is applied both to the template contents and
to its path.

In addition, attempting to overwrite an existing file when
creating a template will result in failure.

1 files changed, 18 insertions, 0 deletions

diff --git a/templates/cowboy_loop_h.erl b/templates/cowboy_loop_h.erl
new file mode 100644
index 0000000..ce301c9
--- /dev/null
+++ b/templates/cowboy_loop_h.erl
@@ -0,0 +1,18 @@
+-module(template_name).
+-behaviour(cowboy_loop_handler).
+
+-export([init/3]).
+-export([info/3]).
+-export([terminate/3]).
+
+-record(state, {
+}).
+
+init(_, Req, _Opts) ->
+	{loop, Req, #state{}, 5000, hibernate}.
+
+info(_Info, Req, State) ->
+	{loop, Req, State, hibernate}.
+
+terminate(_Reason, _Req, _State) ->
+	ok.