[PowerRename] upper/lower/titlecase transform feature (#4183)

* Add basic transform functionality

* Add basic transform functionality

* Change toupper/tolower/isspace to towupper/towlower/towisspace. For loops omitted if possible.

* Avoid wcslen() in for statement

* Avoid wcslen() in for statement

* Add basic transform functionality

* Change toupper/tolower/isspace to towupper/towlower/towisspace. For loops omitted if possible.

* Avoid wcslen() in for statement

* Avoid wcslen() in for statement

* Add basic transform functionality

* Change toupper/tolower/isspace to towupper/towlower/towisspace. For loops omitted if possible.

* Avoid wcslen() in for statement

* Adjust Powerrename Interface

* Add trimming rename string

* Remove leading and trailing spaces from rename string

* Add support for transforming only item name or extension. Temporarily remove trimming to refactor. Change CAPITALIZED to TITLECASE

* Fix bug when search for area is empty

* Add trimming back with refactor(leading spaces, trailing spaces, trailing dots)

* Now supports transforming when search area is empty

* Add smarter titlecase

Transformation breaks when new filename contains an unusable character (\/?:*?"<>|)
These characters need to be removed from new name anyway.

* minor bugfix

* Add unittests, contains failing tests

* Remove unnecessary/failing tests

* remove generated file

* some code formatting and fix memory leak issues

* Use proper allocation, change int to size_t

* Refactor. Move transforming to Helpers.cpp

* Refactor. Move trimming to Helpers.cpp

* Change StrDup to SHStrDup. Some refactoring.

* Fix memery leak, add proper result controls, use newNameToUse in functon calls becaause it is where the final form of the string is tracked

* Change declarations of strings, add proper result controls

* Slightly widen the labels to cover the whole text

* Add extended characters support

* Rename a variable

* Correctly identify the last word for titlecase

* Add empty line to last line of resource.h

src/modules/powerrename/lib/PowerRenameInterfaces.h

@@ -11,7 +11,10 @@ enum PowerRenameFlags
     ExcludeFolders = 0x20,
     ExcludeSubfolders = 0x40,
     NameOnly = 0x80,
-    ExtensionOnly = 0x100
+    ExtensionOnly = 0x100,
+    Uppercase = 0x200,
+    Lowercase = 0x400,
+    Titlecase = 0x800
 };
 
 interface __declspec(uuid("3ECBA62B-E0F0-4472-AA2E-DEE7A1AA46B9")) IPowerRenameRegExEvents : public IUnknown