Certain characters in formal names cause problems with Android

[freakboy3742]

Certain characters (/\:<>"?*|) are prohibited from project paths on Android. These names are legal on other platforms

In addition, the character ! causes problems when used as part of a path name.

To Reproduce
Steps to reproduce the behavior:

1. Run briefcase new, using a formal name of Hello! or Hello?
2. Run briefcase run android

Using Hello!, the build will fail with the error:

[hello] Building Android APK...
Exception in thread "main" java.lang.RuntimeException: Could not determine wrapper version.
        at org.gradle.wrapper.GradleWrapperMain.wrapperVersion(GradleWrapperMain.java:111)
        at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
Caused by: java.lang.RuntimeException: No build receipt resource found.
        at org.gradle.wrapper.GradleWrapperMain.wrapperVersion(GradleWrapperMain.java:97)
        ... 1 more

Error while building project.

[hello] Building Android APK...

FAILURE: Build failed with an exception.

• Where:
  Settings file '/Users/rkm/projects/beeware/briefcase/local/hello/android/gradle/Hello?/settings.gradle' line: 2

• What went wrong:
  A problem occurred evaluating settings 'Hello?'.

The project name 'Hello?' must not contain any of the following characters: [/, , :, <, >, ", ?, *, |]. Set the 'rootProject.name' or adjust the 'include' statement (see https://docs.gradle.org/7.2/dsl/org.gradle.api.initialization.Settings.html#org.gradle.api.initialization.Settings:include(java.lang.String[]) for more details).

• Try:
  Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 633ms

Error while building project.

**Expected behavior**

App should build and start.

**Environment:**
 - Operating System: All
 - Python version: All
 - Software versions:
   - Briefcase: 0.3.6