Add Dockerfile and usage README for Apktool framework

apktool/Dockerfile

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+FROM gradle:8.11.1-jdk17-alpine AS build
+
+WORKDIR /src
+
+COPY . .
+
+RUN gradle build shadowJar proguard
+
+
+FROM openjdk:11
+
+WORKDIR /data
+
+COPY --from=build /src/brut.apktool/apktool-cli/build/libs/apktool-cli.jar /
+
+ENTRYPOINT ["java", "-Xmx1024M", "-Dfile.encoding=utf-8", "-Djdk.util.zip.disableZip64ExtraFieldValidation=true", "-Djdk.nio.zipfs.allowDotZipEntry=true", "-jar", "/apktool-cli.jar"]

apktool/README.md

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+# Apktool
+
+A tool for reverse engineering Android apk files
+
+Official project [link](https://github.com/iBotPeaches/Apktool)
+
+## Usage
+
+Build image
+
+```bash
+docker build --platform=linux/amd64 -t apktool -f Dockerfile .
+```
+
+Decompile APK that's named `test.apk`
+
+```bash
+docker run --rm --name apktool-temp --platform=linux/amd64 -v $(pwd):/data/ -it apktool d test.apk
+```
+
+Pack it back
+
+```bash
+docker run --rm --name apktool-temp --platform=linux/amd64 -v $(pwd):/data/ -it apktool b test -o patched_test.apk
+```
+
+Or use prebuilt image `vadimbelous/apktool`: https://hub.docker.com/r/vadimbelous/apktool