Android.gitignore: Add build_file_checksums.ser and modules.xml files

Add compilation db to Qt gitignore

Add pip-wheel-metadata to Python.gitignore

PEP-517 has resulted in some updates to the Python
build process. As a result, a new directory called
pip-wheel-metadata is created on fresh builds.
This PR adds this directory into the Python default
gitignore. See
https://github.com/pypa/pip/blob/e5f4bbb7ddff87f48f2b5815513e4211ccdde83a/src/pip/_internal/req/req_install.py#L568

Ignore CMake FetchContent directory

CMake's `FetchContent` module creates a `_deps` directory on the root (configurable by modifying `FETCHCONTENT_BASE_DIR`)

Unity: Never ignore asset meta data

Update Ruby.ignore to ignore .byebug_history file

The file `.byebug_history` is generated when using the popular https://github.com/deivid-rodriguez/byebug gem for debugging in Ruby. It contains a list of commands the user has run while debugging, which should not be committed to the repository. The author of the gem agrees with this here: https://github.com/deivid-rodriguez/byebug/issues/204#issuecomment-178238302

I have copied this from the Rails gitignore here: https://github.com/github/gitignore/blob/f908e51bcf38ae5ede449c55189a7b25d8c507cc/Rails.gitignore#L45

Merge branch 'master' of https://github.com/github/gitignore into add_compilation_db_to_qt_gitignore

QtCreator above 4.8 version is utilizing a so called "compilation database" which placed in the compile_commands.json and contains generated information.

ignore android lint temp files.

Signed-off-by: NYousha <Yousha.A@Hotmail.com>

Unity: ignore mdbs, fix path to crashlytics file, make AssetStoreTools optional

Only people building Unity plugins will need to import the asset store tools plugin into their project, and it's a toss up whether they want to commit the tooling into their repo (they might or they might not want to, it highly depends on their workflow). The default .gitignore shouldn't be making this choice for these users.

Unity projects targeting the 2.0/3.5 runtime or built with mono < v5.0 generate `mdb` files, not `pdb` files.

Looks like the `crashlytics-build.properties` gets around in more than just the `StreamingAssets` folder, looking at [examples around the internets](https://github.com/auth0/sharelock-android/blob/master/app/src/main/assets/crashlytics-build.properties), so it should probably just be ignored as a filename.

Add version control ignore

google-services.json

vcs.xml can be considered for gitignore as per this [stackoverflow discussion](https://stackoverflow.com/questions/16736856/what-should-be-in-my-gitignore-for-an-android-studio-project/18454251#18454251)

google-services.json file should be commented on default if they want they will change otherwise it'll destroy the project

Unified base folder name format

[Unity] Ignore Logs/Packages-Update.log

[Visual studio] Ignore health check temp database

IAR_EWARM

Unity Logs

Added Logs to Unity.gitignore, which is automatically generated in Unity 2018.3 to log package updates.

Updating my fork with the original master