feat: solve part one using basic parsing

internal/2015/DayEight/code.go

@@ -15,3 +15,33 @@ func ParseInput(filepath string) []string {
 	content, _ := os.ReadFile(filepath)
 	return strings.Split(string(content), "\n")
 }
+
+func PartOne(data []string) int {
+	result := 0
+	for _, line := range data {
+		codeLength := len(line)
+		memoryLength := 0
+		for idx := 1; idx < len(line)-1; idx++ {
+			if line[idx] == '\\' && idx+1 < len(line)-1 {
+				switch line[idx+1] {
+				case '\\', '"':
+					memoryLength++
+					idx++
+				case 'x':
+					if idx+3 < len(line)-1 {
+						memoryLength++
+						idx += 3
+					}
+				}
+			} else {
+				memoryLength++
+			}
+		}
+		result += codeLength - memoryLength
+	}
+	return result
+}
+
+func PartTwo(data []string) int {
+	return 0
+}