To make your project/deb affect multiple apps like some "Pwners" you see, you will need to edit the .plist next to your Tweak.xm like this:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Filter</key>
<dict>
<key>Bundles</key>
<array>
<string>com.xx.yy</string>
<string>com.xxx.yyy</string>
<string>com.xxxx.yyyy</string>
<string>com.xxxxx.yyyyy</string>
<string>com.xxxxxx.yyyyyy</string>
</array>
</dict>
</dict>
</plist>
Replace com.xx.yy with the bundle ID of the apps you want it to affect.
You can also use the application's Executable instead of bundle ID:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Filter</key>
<dict>
<key>Executables</key>
<array>
<string>BINARYNAMEHERE</string>
</array>
</dict>
</dict>
</plist>
To affect all apps, you can use com.apple.uikit/com.apple.springboard or delete the plist completely.