Add initial implementations for encoder handling and conversion logic

Introduce encoder modules for various codecs and formats (e.g., h264_nvenc, libx264, libmp3lame). Add `Convertor` logic to retrieve supported formats via FFmpeg utilities and manage encoders for audio, video, and image processing.

internal/application/convertor/encoder/encoder.go

@@ -0,0 +1,84 @@
+package encoder
+
+import (
+	"errors"
+	"git.kor-elf.net/kor-elf/gui-for-ffmpeg/internal/ffmpeg/encoder"
+)
+
+type ConvertorFormatContract interface {
+	GetTitle() string
+	AddEncoder(encoder encoder.EncoderDataContract)
+	GetFileType() encoder.FileTypeContract
+	GetEncoders() map[int]encoder.EncoderDataContract
+}
+
+type ConvertorFormat struct {
+	title    string
+	fileType encoder.FileTypeContract
+	encoders map[int]encoder.EncoderDataContract
+}
+
+func NewConvertorFormat(title string, fileType encoder.FileTypeContract) ConvertorFormatContract {
+	return &ConvertorFormat{
+		title:    title,
+		fileType: fileType,
+		encoders: map[int]encoder.EncoderDataContract{},
+	}
+}
+
+func (f *ConvertorFormat) GetTitle() string {
+	return f.title
+}
+
+func (f *ConvertorFormat) AddEncoder(encoder encoder.EncoderDataContract) {
+	f.encoders[len(f.encoders)] = encoder
+}
+
+func (f *ConvertorFormat) GetEncoders() map[int]encoder.EncoderDataContract {
+	return f.encoders
+}
+
+func (f *ConvertorFormat) GetFileType() encoder.FileTypeContract {
+	return f.fileType
+}
+
+type ConvertorFormatsContract interface {
+	NewEncoder(encoderName string) bool
+	GetFormats() map[string]ConvertorFormatContract
+	GetFormat(format string) (ConvertorFormatContract, error)
+}
+
+type ConvertorFormats struct {
+	formats map[string]ConvertorFormatContract
+}
+
+func NewConvertorFormats() ConvertorFormatsContract {
+	return &ConvertorFormats{
+		formats: map[string]ConvertorFormatContract{},
+	}
+}
+
+func (f *ConvertorFormats) NewEncoder(encoderName string) bool {
+	if supportEncoders[encoderName] == nil {
+		return false
+	}
+	data := supportEncoders[encoderName]()
+	for _, format := range data.GetFormats() {
+		if f.formats[format] == nil {
+			f.formats[format] = NewConvertorFormat(format, data.GetFileType())
+		}
+		f.formats[format].AddEncoder(data)
+	}
+	return true
+}
+
+func (f *ConvertorFormats) GetFormats() map[string]ConvertorFormatContract {
+	return f.formats
+}
+
+func (f *ConvertorFormats) GetFormat(format string) (ConvertorFormatContract, error) {
+	if f.formats[format] == nil {
+		return &ConvertorFormat{}, errors.New("not found ConvertorFormat")
+	}
+	return f.formats[format], nil
+}