Add Slant it and Blaze

[blenderskool]

[Insert URL to the app here.]
https://slantit.app
https://blaze.now.sh

[Explain what this app is about and why it should be included here.]
Slant it makes it easy to create 3D product videos from simple screen recordings that can be shared online. Most of the core features are available without creating an account. However, the app does have pro features that require an account for obvious reasons. There is no such app on the list, hence I feel it would be a great addition.

Blaze is an open source peer-to-peer file sharing web app that works across devices and networks. Most file sharing apps store files on a server (either permanently or temporarily), but Blaze simply transmits the file live to other devices without persisting it anywhere. It also supports sharing files with multiple users at once across different networks.

By submitting this pull request I confirm I've read and complied with the below requirements.

Failure to properly do so will just result in the pull request being closed and everyone's time wasted. Please read it twice. Most people miss many things.

• I have read the Contribution guidelines and I am confident that my PR is suitable.
• This pull request has a descriptive title. For example, Add [App name], not Update readme.md or Added new entries.
• The app I added is not a duplicate.