Implement file association Open a file from Finder/Explorer (#2918)

* implement MacOS openFile/openFiles events

* wip: windows file association

* fix macro import

* add file icon copy

* try copy icon

* keep only required part of scripts

* update config schema

* fix json

* set fileAssociation for mac via config

* proper iconName handling

* add fileAssociation icon generator

* fix file association icons bundle

* don't break compatibility

* remove mimeType as not supported linux for now

* add documentation

* adjust config schema

* restore formatting

* remove unused option in file association

* get rid of openFiles mac os. change configuration structure

* remove unused channel

* fix documentation

* fix typo

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Co-authored-by: Lea Anthony <lea.anthony@gmail.com>

v2/pkg/options/mac/mac.go

@@ -22,6 +22,7 @@ type Options struct {
 	WindowIsTranslucent  bool
 	Preferences          *Preferences
 	//ActivationPolicy     ActivationPolicy
-	About *AboutInfo
+	About      *AboutInfo
+	OnFileOpen func(filePath string) `json:"-"`
 	//URLHandlers          map[string]func(string)
 }