chore: change version headers to actually describe versions

Using stable vs nightly is misleading in our case since the 10.X version range.
NIghtlies are actually considered stable releases while providing ahead-of-the-time discord features from the canary v10 api.
Previously stable was more considered LTS, tho we're gonna clarify that more and phase it out.
Actual testing builds have other names, like descriptive branch names.
Our name schema has been since years {DISCORD_API_VERSION}.{MAJOR}.{MINOR}-{PATCH_OR_TESTING-WITH-NUM}

Author: Lulalaby

README.md

@@ -21,7 +21,7 @@ The documentation is available at [ext-docs.dcs.aitsys.dev](https://ext-docs.dcs
 
 ## NuGet Packages
 
-| Package                                    | Stable                                                                                                                      | Nightly                                                                                                                                        |
+| Package                                    | LTS                                                                                                                      | Stable                                                                                                                                        |
 | ------------------------------------------ | --------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------- |
 | DisCatSharp.Extensions.TwoFactorCommands   | ![NuGet](https://img.shields.io/nuget/v/DisCatSharp.Extensions.TwoFactorCommands.svg?label=&logo=nuget&style=flat-square)   | ![NuGet](https://img.shields.io/nuget/vpre/DisCatSharp.Extensions.TwoFactorCommands.svg?label=&logo=nuget&style=flat-square&color=%23ff1493)   |
 | DisCatSharp.Extensions.OAuth2Web           | ![NuGet](https://img.shields.io/nuget/v/DisCatSharp.Extensions.OAuth2Web.svg?label=&logo=nuget&style=flat-square)           | ![NuGet](https://img.shields.io/nuget/vpre/DisCatSharp.Extensions.OAuth2Web.svg?label=&logo=nuget&style=flat-square&color=%23ff1493)           |