New macros file-exists-p! & project-file-exists-p!

The latter replaces the doom-project-has! macro

modules/lang/cc/autoload.el

@@ -6,7 +6,7 @@
   (interactive)
   (unless (memq major-mode '(c-mode c++-mode objc-mode))
     (user-error "Not a C/C++/ObjC buffer"))
-  (unless (doom-project-has! "compile_commands.json")
+  (unless (project-file-exists-p! "compile_commands.json")
     (user-error "No compile_commands.json file"))
   ;; first rtag
   (when (and (featurep 'rtags)

modules/lang/java/autoload.el

@@ -24,9 +24,9 @@
 
 ;;;###autoload
 (defun +java|android-mode-maybe ()
-  (when (doom-project-has! (or "local.properties"
-                               "AndroidManifest.xml"
-                               "src/main/AndroidManifest.xml"))
+  (when (project-file-exists-p! (or "local.properties"
+                                    "AndroidManifest.xml"
+                                    "src/main/AndroidManifest.xml"))
     (android-mode +1)
     (doom/set-build-command "./gradlew %s" "build.gradle")))