Update README with latest ABOUT.md, INSTALL.md, CONTRIBUTING.md and badges

Author: github-actions[bot]

README.md

@@ -46,20 +46,6 @@ The **control-toolbox** ecosystem brings together <a href="https://julialang.org
   </a>
 </p>
 
-## Installation
-
-To install CTAppTemplate please 
-<a href="https://docs.julialang.org/en/v1/manual/getting-started/">open Julia's interactive session (known as REPL)</a> 
-and press <kbd>]</kbd> key in the REPL to use the package mode, then add the package:
-
-```julia
-julia> ]
-pkg> add CTAppTemplate
-```
-
-> [!TIP]
-> If you are new to Julia, please follow this [guidelines](https://github.com/orgs/control-toolbox/discussions/64).
-
 ## Contributing
 
 [issue-url]: https://github.com/control-toolbox/CTAppTemplate.jl/issues