Fix some links in table of content

Move many libraries and bindings to relavant sections

Removed duplicates:

- opengl-ada
- ada-nanovg
- ada-base
- ada-net-framework

Added new projects:

- AXMPP
- dcf-ada
- weechat-ada
- weechat-canberra
- weechat-emoji

Renamed some sections:

- "Networking" to "Networking and Communication Middlware"
- "Multimedia" splitted to "Computer Graphics", "General Purpose Computing",
  and "Sound"
- "Encryption, hashing, encoding" to "Cryptography"

Created new sections:

- Terminal User Interface
- Compression
- Chatting and Communication
- Robotics
- Linux and POSIX
- Windows and .NET

Rename "Computer Graphics" to "Graphics and Multimedia"

Merge pull request #68 from mgrojo/master

Add ASFML to Games section

Merge pull request #69 from jklmnn/patch-6

Add Ada for GitHub Actions to CI section

Merge pull request #70 from pyjarrett/patch-1

Add septum under Applications/Misc

Add banner for new programming competition

Change URL of #ada IRC channel to Libera.Chat network

Update URL of Libera.Chat since GitHub does not recognize ircs protocol

Merge pull request #72 from lkujaw/master

Add BLAKE2S to the Cryptography category

Merge pull request #73 from zertovitch/patch-1

Improved description for HAC

Merge pull request #74 from zertovitch/patch-2

Improved LEA's description

Merge pull request #78 from mgrojo/master

One addition and one deletion to Games section. Two additions to Networking and Communication Middleware section

Merge pull request #86 from JeremyGrosser/patch-1

Add link to chests

Change link to matrix-ada to point to Lobby on Gitter

The #ada-lang channel on matrix.org is an RSS feed.

Add back link to #ada-lang:matrix.org in News and Resources section

Merge pull request #88 from nytpu/patch-1

Update README.md

Merge pull request #89 from streaksu/patch-1

Update README.md

Merge pull request #92 from Richard-Wai/patch-1

Add AURA and ASAP to README.md