Actually saved some milliseconds, can be observed in benchmarks too
from packer readme
```
To optimize startup time, packer.nvim compiles code to perform the lazy-loading operations you specify. This means that you do not need to load packer.nvim unless you want to perform some plugin management operations.
```
Add packer commands manually to mappings.lua, but with basic functionalty
By this, we don't losr the packer commands and don't even load at startup
After some command is actually executed, it will load the PackerCommands as they were
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