chore: some project settings for VSCode and clangd

.clangd

@@ -1,10 +1,10 @@
 CompileFlags:
   Add: [
     "-std=c++17",
-    -I/home/fanyfull/EDisk/CppCodes/IMECodes/fcitx5-quwei/src/,
+    -I/home/sonnycalcr/EDisk/CppCodes/IMECodes/fcitx5-FanIME/src/,
     -I/usr/include/Fcitx5/Utils/,
     -I/usr/include/Fcitx5/Utils/fcitx-utils/,
-    -I/usr/include/Fcitx5/Core,
+    -I/usr/include/Fcitx5/Core/,
     -I/usr/include/Fcitx5/Config/,
     -I/usr/include/Fcitx5/Module/,
     -I/usr/include/Fcitx5/Module/fcitx-module/punctuation/,

.vscode/c_cpp_properties.json

@@ -0,0 +1,21 @@
+{
+  "configurations": [
+    {
+      "name": "Linux",
+      "includePath": [
+        "${workspaceFolder}/src/",
+        "/usr/include/Fcitx5/Utils/",
+        "/usr/include/Fcitx5/Utils/fcitx-utils/",
+        "/usr/include/Fcitx5/Core/",
+        "/usr/include/Fcitx5/Config/",
+        "/usr/include/Fcitx5/Module/",
+        "/usr/include/Fcitx5/Module/fcitx-module/punctuation/",
+        "/usr/include/Fcitx5/Module/fcitx-module/quickphrase/"
+      ],
+      "intelliSenseMode": "linux-gcc-x64",
+      "compilerPath": "/usr/bin/g++",
+      "cppStandard": "c++17"
+    }
+  ],
+  "version": 4
+}

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+  "C_Cpp.default.cppStandard": "c++17"
+}