for solving #584 added some options.

1. support PNG format as default.

• Most programs these days support PNG natively.
• Moreover if Ditto ignored PNG, CF_DIB is used that has many problems (Windows makes it as no alpha channel and many programs doesn't want to use it)

2. add support all types advanced option.

• User might want Ditto to keep all data about clipboard
• Currently, users have to add the type every time after recognizing the missing item.
• Because it is experimental and it will ignore supported type list in main option confusedly, default is false.
• About GetAvailableTypes functions, there is re-check part after get available format using GetNextFormat.
• Because GetNextFormat has a bug that not return some of formats (especially CF_DIB), it will re-check to cover include at least the standard formats. Ref

3. in WriteImageToFile use PNG first.

• PNG might be closer to original source. (CF_DIB is most likely lost information.)

refactoring things

1. add Image helper to assemble image process.
2. rename variables that makes confuse.
3. code diet to enhance readability.
4. remove special action about Edge. (currently Edge use chromium and it's process name is no more MicrosoftEdge.exe)

Happy new year~