feat(meson): add indents.scm

tests/indent/meson/meson.build

@@ -0,0 +1,34 @@
+project('simple', 'c')
+
+src = [
+  'source1.c',
+  'source2.c',
+]
+
+if 1 == 2
+  if meson.is_cross_build()
+    src += [
+      'src1.c',
+      'src2.c']
+  endif
+endif
+
+inc = include_directories([
+  'dir1/',
+])
+
+
+dep = declare_dependency(
+  sources : src,
+  include_directories : inc,
+)
+
+executable('myexe', src,
+  include_directories : [
+    'd1',
+    [
+      'd2',
+      'd3',
+    ]
+  ],
+  dependencies: dep)