feat(eaglemode/plugins): bootstrap Yandex Tracker plugin

Bootstraps a plugin (that doesn't do anything yet) for accessing Yandex Tracker
through Eagle Mode.

This commit only initialises the plugin files, it doesn't actually do anything
other than print the word "Loaded".

API docs for future development: https://yandex.cloud/ru/docs/tracker/about-api

The next steps will be to figure out the emModel classes and the threading model
for fetching the remote data.

Change-Id: Ifce8bc2a61c4fd0c4a591013acbf428a9f5803f8
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12398
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

tools/eaglemode/plugins/yatracker/makers/PlYaTracker.maker.pm

@@ -0,0 +1,47 @@
+package PlYaTracker;
+
+use strict;
+use warnings;
+
+sub GetDependencies
+{
+	return ('emCore');
+}
+
+sub IsEssential
+{
+	return 0;
+}
+
+sub GetFileHandlingRules
+{
+	return ();
+}
+
+sub GetExtraBuildOptions
+{
+	return ();
+}
+
+sub Build
+{
+	shift;
+	my %options=@_;
+
+	system(
+		@{$options{'unicc_call'}},
+		"--math",
+		"--rtti",
+		"--exceptions",
+		"--bin-dir"       , "bin",
+		"--lib-dir"       , "lib",
+		"--obj-dir"       , "obj",
+		"--inc-search-dir", "include",
+		"--link"          , "emCore",
+		"--type"          , "dynlib",
+		"--name"          , "PlYaTracker",
+		"src/PlYaTracker/PlYaTracker.cpp"
+	)==0 or return 0;
+
+	return 1;
+}