Cleaned up buildscripts and meson.build

buildscripts/meson.build

@@ -0,0 +1,26 @@
+if build_machine.system() == 'windows'
+    # evol dll needs to be copied for each build
+    evoldllcopy = custom_target(
+        'evolDLLCopy',
+        depends: evol_subproj.get_variable('evol_lib'),
+        output: 'evolDLL',
+        command: ['powershell.exe', meson.current_source_dir() + '/evoldllcopy.ps1', meson.project_build_root()],
+        build_by_default: true,
+    )
+
+    # flecs dll needs to be copied to root builddir
+    flecsdllcopy = custom_target(
+        'flecsDLLCopy',
+        output: 'flecsDLL',
+        command: ['powershell.exe', meson.current_source_dir() + '/flecsdllcopy.ps1', meson.project_build_root()],
+        build_by_default: true,
+    )
+
+    # lua dll only needs to be copied in the environment setup
+    run_command('python', 
+        meson.project_source_root() / 'subprojects/evol/buildscripts/copy.py',
+        meson.project_source_root() / 'subprojects/luajit/src/lua51.dll', # src
+        meson.project_build_root())                                       # dst
+
+endif
+