Generalized the social media section, added tools

[ghost]

Please check that what you want to add to the awesome-osint list meets quality standards before submitting a pull request. Thanks!

Note: that new categories can be added only when there are 3 packages or more.

Make sure that you've checked the boxes below before you submit the PR:

• [x] I have added my package in alphabetical order.
• [x] I have an appropriate description with correct grammar.
• [x] I know that this package was not listed before.
• [x] I have read the contribution guidelines

Thanks for your PR, you're awesome!

[ghost]

Added Instaloader and Twint to the "Social Media" section. These tools are included in the Trace Labs OSINT VM and are regularly updated.