feat: add fmt to plugin template

Makefile

@@ -52,3 +52,17 @@ distclean:
 .PHONY: rel
 rel: $(REBAR)
 	$(REBAR) emqx_plugrel tar
+
+.PHONY: fmt
+fmt: $(REBAR)
+	@find . \( -name '*.app.src' -o \
+				-name '*.erl' -o \
+				-name '*.hrl' -o \
+				-name 'rebar.config' -o \
+				-name '*.eterm' -o \
+				-name '*.escript' \) \
+				-not -path '*/_build/*' \
+				-not -path '*/deps/*' \
+				-not -path '*/_checkouts/*' \
+				-type f \
+		| xargs | $(REBAR) fmt --verbose -w

README_template.md

@@ -16,5 +16,11 @@ In a shell from this plugin's working directory execute `make rel` to have the p
 ```
 _build/default/emqx_plugrel/emqx_plugin_template-<vsn>.tar.gz
 ```
+## Format
+
+Format all the files in your project by running:
+```
+make fmt
+```
 
 See [EMQX documentation](https://docs.emqx.com/en/enterprise/v5.0/extensions/plugins.html) for details on how to deploy custom plugins.

emqx-plugin.template

@@ -3,7 +3,7 @@
     {description, "Another amazing EMQX plugin."},
     {version, "1.0.0", "The release version of this plugin."},
     {app_vsn, "0.1.0", "The erlang application vsn value."},
-    {emqx_vsn, "v5.6.1", "EMQX version to use as a dependency."},
+    {emqx_vsn, "v5.7.1", "EMQX version to use as a dependency."},
     {license, "Apache-2.0", "Short identifier for license you want to distribute this plugin under."},
     {author_website, "http://example.com", "A website with details about the author."},
     {repo, "https://github.com/emqx/emqx-plugin-template", "Where to find the source code for this plugin."}

rebar_template.config

@@ -12,7 +12,8 @@
     ]}.
 
 {plugins, [
-    {emqx_plugrel, {git, "https://github.com/emqx/emqx_plugrel.git", {tag, "0.5.0"}}}
+    {emqx_plugrel, {git, "https://github.com/emqx/emqx_plugrel.git", {tag, "0.5.0"}}},
+    {erlfmt, "1.3.0"}
 ]}.
 
 {erl_opts, [debug_info]}.