Experimental macro require v2

[Frityet]

An update to #1096 with new semantics:

-- macros.tl
local record macros end
macro macros.double!(x: Statement)
   return ```
      $x
      $x
   ```
end

return macros

-- main.tl
local m = require("macros")
-- also supported: local type m = require("macros")
m.double!(print("hi"))

[Frityet]

@hishamhm I can also make it into local macro ... = require(...)

[github-actions]

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[hishamhm]

@hishamhm I can also make it into local macro ... = require(...)

If you don't do that, how do you disambiguate which type of require it is?