F consolidation

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include/caosdb/value.h

@@ -122,7 +122,7 @@ public:
   LIST_VALUE_CONSTRUCTOR(char *, set_string_value)
   LIST_VALUE_CONSTRUCTOR(bool, set_boolean_value)
 
-  [[nodiscard]] inline auto IsNull() -> bool {
+  [[nodiscard]] inline auto IsNull() const noexcept -> bool {
     return this->wrapped->value_case() == ValueCase::VALUE_NOT_SET;
   }