feat: add indentation queries for angular

tests/indent/angular_spec.lua

@@ -0,0 +1,70 @@
+local Runner = require("tests.indent.common").Runner
+local runner = Runner:new(it, "tests/indent/angular", {
+  tabstop = 2,
+  shiftwidth = 2,
+  expandtab = true,
+  filetype = "htmlangular",
+})
+
+describe("indent HTML Angular:", function()
+  describe("whole file:", function()
+    runner:whole_file "."
+  end)
+
+  describe("new line:", function()
+    for _, info in ipairs {
+      { 1, 2 },
+      { 2, 2 },
+      { 3, 2 },
+      { 4, 2 },
+      { 6, 0 },
+      { 7, 2 },
+      { 8, 4 },
+      { 10, 4 },
+      { 11, 6 },
+      { 12, 6 },
+      { 13, 4 },
+      { 14, 2 },
+    } do
+      runner:new_line("if-else.html", { on_line = info[1], text = "//", indent = info[2] })
+    end
+
+    for _, info in ipairs {
+      { 1, 2 },
+      { 2, 4 },
+      { 3, 6 },
+      { 4, 6 },
+      { 6, 6 },
+      { 7, 6 },
+      { 9, 6 },
+      { 10, 6 },
+      { 12, 2 },
+    } do
+      runner:new_line("switch-case.html", { on_line = info[1], text = "//", indent = info[2] })
+    end
+
+    for _, info in ipairs {
+      { 1, 2 },
+      { 2, 2 },
+      { 3, 2 },
+      { 4, 2 },
+      { 5, 0 },
+    } do
+      runner:new_line("for.html", { on_line = info[1], text = "//", indent = info[2] })
+    end
+
+    for _, info in ipairs {
+      { 1, 2 },
+      { 2, 2 },
+      { 3, 2 },
+      { 4, 2 },
+      { 5, 2 },
+      { 6, 2 },
+      { 7, 2 },
+      { 8, 2 },
+      { 9, 0 },
+    } do
+      runner:new_line("defer.html", { on_line = info[1], text = "//", indent = info[2] })
+    end
+  end)
+end)