allow to force installing a clangd and qtcreator files

Add new targets to the Makefile:
- forceclangd - allow to force installing a .clangd file
- forceclangdall - force installing .clangd file in this project and in libriaries:
  pikotools, morm, ezc and tito
- forceqtcreator - force installing qtcreator files
- forceqtcreatorall - force installing qtcreator files in this project and in libraries
Existing files will be overwritten.

while here:
- update the c++ standard to c++23

Makefile

@@ -40,6 +40,10 @@ clangd: FORCE
 	@.templates/install_clangd.sh
 
 
+forceclangd: FORCE
+	@.templates/install_clangd.sh force
+
+
 clangdall: clangd
 	@$(MAKE) -C ../pikotools clangd
 	@$(MAKE) -C ../morm clangd
@@ -47,10 +51,21 @@ clangdall: clangd
 	@$(MAKE) -C ../tito clangd
 
 
+forceclangdall: forceclangd
+	@$(MAKE) -C ../pikotools forceclangd
+	@$(MAKE) -C ../morm forceclangd
+	@$(MAKE) -C ../ezc forceclangd
+	@$(MAKE) -C ../tito forceclangd
+
+
 qtcreator: clangd
 	@.templates/install_qtcreator.sh
 
 
+forceqtcreator: forceclangd
+	@.templates/install_qtcreator.sh force
+
+
 qtcreatorall: qtcreator
 	@$(MAKE) -C ../pikotools qtcreator
 	@$(MAKE) -C ../morm qtcreator
@@ -58,5 +73,12 @@ qtcreatorall: qtcreator
 	@$(MAKE) -C ../tito qtcreator
 
 
+forceqtcreatorall: forceqtcreator
+	@$(MAKE) -C ../pikotools forceqtcreator
+	@$(MAKE) -C ../morm forceqtcreator
+	@$(MAKE) -C ../ezc forceqtcreator
+	@$(MAKE) -C ../tito forceqtcreator
+
+
 FORCE: