utilize odin test -all-packages instead of (make/bat) scripts for running tests

tests/vendor/Makefile

@@ -1,10 +0,0 @@
-ODIN=../../odin
-ODINFLAGS=
-
-OS=$(shell uname)
-
-ifeq ($(OS), OpenBSD)
-    ODINFLAGS:=$(ODINFLAGS) -extra-linker-flags:-L/usr/local/lib
-endif
-
-all:

tests/vendor/all.odin

@@ -0,0 +1,3 @@
+package tests_vendor
+
+@(require) import "glfw"

tests/vendor/build.bat

@@ -1,8 +0,0 @@
-@echo off
-set COMMON=-show-timings -no-bounds-check -vet -strict-style -define:ODIN_TEST_FANCY=false
-set PATH_TO_ODIN==..\..\odin
-
-echo ---
-echo Running vendor:glfw tests
-echo ---
-%PATH_TO_ODIN% test glfw %COMMON% -out:vendor_glfw.exe || exit /b

tests/vendor/glfw/test_vendor_glfw.odin

@@ -1,3 +1,4 @@
+//+build darwin, windows
 package test_vendor_glfw
 
 import "core:testing"