Improve spell checker using codespell

* Configures automated spell checking with codespell
Adds GitHub workflows and configuration files for automated spell checking using `codespell`.

This includes:
- A workflow for checking pull requests and preventing new typos
- A workflow for automatically fixing typos in the main codebase
- Configuration files for `codespell` to ignore specific terms and file types
- Documentation on how to use and configure the spell checking workflows.

* Corrects minor spelling and grammar errors.

Fwk/AppFwk/cafProjectDataModel/cafFactory.h

@@ -72,7 +72,7 @@ namespace caf
 //==================================================================================================
 /// A generic Factory class template
 /// Usage:
-///     Simply add the classes that is supposed to be created by the factory by doing the folowing:
+///     Simply add the classes that is supposed to be created by the factory by doing the following:
 ///
 ///     caf::Factory<BaseType, KeyType>::instance()->registerCreator<TypeToCreate>(key);
 ///

Fwk/AppFwk/cafProjectDataModel/cafPdmCore/cafPdmCore_UnitTests/cafPdmCoreBasicTest.cpp

@@ -342,7 +342,7 @@ TEST( BaseTest, PdmChildArrayField )
 
 TEST( BaseTest, PdmChildArrayParentField )
 {
-    // Test of instanciating a class with forward declare of object used in PdmChildArrayField and PdmChildField
+    // Test of instantiating a class with forward declare of object used in PdmChildArrayField and PdmChildField
     Parent* parentObj = new Parent;
 
     delete parentObj;
@@ -630,8 +630,8 @@ TEST( BaseTest, testTypedChildren )
     auto obj = s1->firstAncestorOrThisOfType<InheritedDemoObj>();
     EXPECT_TRUE( obj == ihd1 );
 
-    auto decendants = ihd1->descendantsIncludingThisOfType<DemoPdmObject>();
-    EXPECT_EQ( size_t( 4 ), decendants.size() );
+    auto descendants = ihd1->descendantsIncludingThisOfType<DemoPdmObject>();
+    EXPECT_EQ( size_t( 4 ), descendants.size() );
 
     delete ihd1;
 }

Fwk/AppFwk/cafProjectDataModel/cafPdmCore/cafPdmPointer.h

@@ -68,7 +68,7 @@ private:
 /// The guarding sets the pointer to NULL if the object pointed to dies
 ///
 /// NOTE: This is not reference counting. The user is responsible to delete the objects pointed to.
-///       It _can_ be used together with the cvf::ref system if neccesary (this is no recomendation)
+///       It _can_ be used together with the cvf::ref system if necessary (this is no recommendation)
 //==================================================================================================
 
 template <class T>

Fwk/AppFwk/cafProjectDataModel/cafPdmUiCore/cafInternalPdmUiFieldCapability.inl

@@ -117,7 +117,7 @@ void PdmFieldUiCap<FieldType>::setValueFromUiEditor( const QVariant& uiValue, bo
 /// Note : For fields with a none-empty m_optionEntryCache list, the returned QVariant contains the
 ///        _indexes_ to the selected options rather than the actual values, if they can be found.
 ///
-///        If this is a multivalue field, and we cant find all of the field values among the options,
+///        If this is a multivalue field, and we can't find all of the field values among the options,
 ///        the method asserts (For now), forcing the valueOptions to always contain the field values.
 ///        Single value fields will return -1 if the option is not found, allowing the concept of "nothing selected"
 //--------------------------------------------------------------------------------------------------