chore: Add CMake presets for IDEs (now) and CI (later).

CMakePresets.json

@@ -0,0 +1,19 @@
+{
+  "version": 3,
+  "configurePresets": [
+    {
+      "name": "debug-default",
+      "binaryDir": "${sourceDir}/_build",
+      "generator": "Ninja",
+      "cacheVariables": {
+        "ASAN": true,
+        "DESKTOP_NOTIFICATIONS": true,
+        "SPELL_CHECK": true,
+        "STRICT_OPTIONS": true,
+        "CMAKE_BUILD_TYPE": "Debug",
+        "CMAKE_COMPILE_WARNING_AS_ERROR": true,
+        "CMAKE_EXPORT_COMPILE_COMMANDS": true
+      }
+    }
+  ]
+}

src/BUILD.bazel

@@ -177,8 +177,8 @@ cc_library(
     ),
     hdrs = glob(["**/*.h"]) + [":version"],
     copts = [
-        "-iquoteqtox",
-        "-iquote$(GENDIR)/qtox",
+        "-Iqtox",
+        "-I$(GENDIR)/qtox",
     ] + select({
         "//tools/config:freebsd": [],
         "//tools/config:linux": ["-fPIC"],
@@ -229,8 +229,8 @@ cc_library(
     name = "main",
     srcs = ["main.cpp"],
     copts = [
-        "-iquoteqtox",
-        "-iquote$(GENDIR)/qtox",
+        "-Iqtox",
+        "-I$(GENDIR)/qtox",
     ] + select({
         "//tools/config:freebsd": [],
         "//tools/config:linux": ["-fPIC"],