Add support for inline scripts

* Script can be defined in the macro segment or loaded from a file
* Supports both LUA and Python
* Can be used for actions and conditions
* obs_script_create and obs_script_destroy are resolved at runtime
  (Let's hope the API remains stable)

plugins/scripting/macro-segment-script-inline.hpp

@@ -0,0 +1,56 @@
+#pragma once
+#include "file-selection.hpp"
+#include "inline-script.hpp"
+#include "variable-text-edit.hpp"
+
+#include <QLayout>
+
+namespace advss {
+
+class MacroSegmentScriptInline {
+public:
+	InlineScript::Type GetType() const { return _script.GetType(); }
+	void SetType(InlineScript::Type);
+	obs_script_lang GetLanguage() const { return _script.GetLanguage(); }
+	void SetLanguage(obs_script_lang);
+	StringVariable GetScript() const { return _script.GetText(); }
+	void SetScript(const std::string &);
+	std::string GetPath() const { return _script.GetPath(); }
+	void SetPath(const std::string &);
+
+protected:
+	InlineScript _script;
+};
+
+class MacroSegmentScriptInlineEdit : public QWidget {
+	Q_OBJECT
+
+public:
+	MacroSegmentScriptInlineEdit(
+		QWidget *, std::shared_ptr<MacroSegmentScriptInline> = nullptr);
+	virtual ~MacroSegmentScriptInlineEdit() = default;
+
+protected slots:
+	void ScriptTypeChanged(int);
+	void LanguageChanged(int);
+	void ScriptChanged();
+	void PathChanged(const QString &);
+
+protected:
+	void PopulateWidgets();
+	void SetupWidgetConnections();
+	void SetupLayout();
+	void SetWidgetVisibility();
+
+	QComboBox *_scriptType;
+	QComboBox *_language;
+	ScriptEditor *_script;
+	FileSelection *_path;
+	QPushButton *_openFile;
+	QHBoxLayout *_fileLayout;
+
+	std::shared_ptr<MacroSegmentScriptInline> _entryData;
+	bool _loading = true;
+};
+
+} // namespace advss