[TIMOB-27706] Android: Native modules having uppercase "name" are excluded from build on case-sensitive systems

*Summary:* Native Android modules such as "ti.facebook" will not have their main JAR included in the app if built from a case-sensitive file system. The app will succeed to build, but attempting to use the module's APIs will fail. For "ti.facebook", the following warning will be logged when doing a build.

[WARN]  Module facebook version 8.0.0 does not have a main jar file

_(This is more of an issue on Linux where the file system is case-sensitive by default.)_ *How to create case-sensitive disk image on macOS:*

Open the "Disk Utility" app.

From the menu, click: File -> New Image -> Blank Image

Click on the "Image Format" drop-down and select "sparse bundle disk image".

In "Save As" field, enter: CaseSensitive.sparsebundle

In "Where" field, select destination to write this image file to.

In "Name" field, enter: CaseSensitive

In "Size" field, enter: 1 GB

Click "Format" drop-down and select "Mac OS Extended (Case-sensitive)".

Click the "Save" button.

You can mount the above image by double clicking the "CaseSensitive.sparsebundle" file. You can find the "CaseSensitive" volume in "Finder" under the "Locations" section. *Steps to reproduce:*

Download [kitchensink-v2](https://github.com/appcelerator/kitchensink-v2) to the case sensitive volume.

Download the newest release version of the [ti.facebook](https://github.com/appcelerator-modules/ti.facebook) module.

Unzip module to folder: kitchensink-v2/modules/ti.facebook/...

Open the "tiapp.xml" file.

Build and run on Android.

Notice the following gets logged:

[WARN]  Module facebook version 8.0.0 does not have a main jar file

Tap on the app's "Mashups" tab.

Tap on the Facebook row.

Notice the app crashes.

*Reason:* Titanium's build script is doing a toLowerCase() on the JAR file name [here](https://github.com/appcelerator/titanium_mobile/blob/243afd00e0760f2060e797312942ee65d47b9f5f/android/cli/commands/_build.js#L1575). *Note:* This issue causes a build failure in Titanium 9.0.0 since moving to gradle.