Tilde ~ not recognized for Android SDK Path

```
$ bubblewrap init --manifest https://chatncharge.nelkinda.com/manifest.json
,-----. ,--. ,--. ,--.
| |) /_,--.,--| |-.| |-.| |,---.,--. ,--,--.--.,--,--.,---.
| .-. | || | .-. | .-. | | .-. | |.'.| | .--' ,-. | .-. |
| '--' ' '' | `-' | `-' | \ --| .'. | | \ '-' | '-' '
`------' `----' `---' `---'`--'`----'--' '--`--' `--`--| |-'
`--'
? Do you want Bubblewrap to install JDK?
(Enter "No" to use your JDK installation) No
? Path to your existing JDK: /home/christian.hujer/.sdkman/candidates/java/11.0.19.fx-zulu/
? Do you want Bubblewrap to install Android SDK?
(Enter "No" to use your installation) No
? Path to your existing Android SDK: ~/Android/Sdk
Android Sdk not found
? Path to your existing Android SDK: /home/christian.hujer/Android/Sdk
```
**Describe the bug**
When I enter the path to my Android Sdk with ~, `bubblewrap` does not find the Sdk. When I enter the full path, manually expanding `~` to my homedirectory, `bubblewrap` finds the Sdk. Like every well-behaved program that processes paths on a Unix system, `bubblewrap` should support tilde-expansion.

**To Reproduce**
Steps to reproduce the behavior:
1. Start bubblewrap for the first time.
2. Enter the path to your JDK.
3. Enter the path to your Android Sdk, using ~

**Expected behavior**
A path with `~` is supported, expanding `~` to the user's home directory.

**Actual behavior**
`bubblewrap` doesn't find the Android Sdk when its path starts with `~`.

**Desktop (please complete the following information):**
- OS: Linux

**Further Notes**
I did not test other paths like the JDK path for tilde expansion. The bug might be with other paths as well.