Windows support

[VasilyKaiser]

Added support for Windows

Restrictions:

• Powershell needs elevated privilege to run "Get-Process" with "-IncludeUserName" parameter.
  • If run withing non privileged session, usernames will not appear.

Problems:

• Trying to kill ports using filter causes panic

  Caught panic:
  
  runtime error: invalid memory address or nil pointer dereference
  
  Restoring terminal...
  
  goroutine 1 [running]:
  runtime/debug.Stack()
          C:/Program Files/Go/src/runtime/debug/stack.go:24 +0x65
  runtime/debug.PrintStack()
          C:/Program Files/Go/src/runtime/debug/stack.go:16 +0x19
  github.com/charmbracelet/bubbletea.(*Program).Run.func1()
          C:/Users/vujov/go/pkg/mod/github.com/charmbracelet/bubbletea@v0.23.2/tea.go:402 +0x95
  panic({0x1170100, 0x131f7f0})
          C:/Program Files/Go/src/runtime/panic.go:890 +0x263
  main.model.Update({{0x0, 0x1, 0x1, 0x1, 0x1, 0x1, {0x1197d1c, 0x7}, {0x1198537, 0x9}, ...}, ...}, ...)
          D:/GitHub/gruyere/main.go:110 +0x596
  github.com/charmbracelet/bubbletea.(*Program).eventLoop(0xc00018c000, {0x11dc478?, 0xc000071b00?}, 0x100458a?)
          C:/Users/vujov/go/pkg/mod/github.com/charmbracelet/bubbletea@v0.23.2/tea.go:343 +0x60a
  github.com/charmbracelet/bubbletea.(*Program).Run(0xc00018c000)
          C:/Users/vujov/go/pkg/mod/github.com/charmbracelet/bubbletea@v0.23.2/tea.go:465 +0x81d
  main.main()
          D:/GitHub/gruyere/main.go:178 +0x285
  

• UI is messed up on Windows terminals

[savannahostrowski]

I don't quite have the bandwidth to debug this right now. Would be happy to have someone take it to the finish line though.

[savannahostrowski]

I'm going to convert this to a draft PR for now, until someone can help take it to the finish line for Windows or until I have a chance to take a look (hope that's okay!)

Related issue: #6