New additions and fixed typos

[shivasankarka]

• Magic 🪄 is here! Added .lock and .toml files with magic, the new modular package manager. Some useful tasks that are available are

  • magic run final - This command runs tests, performs formatting and packages NuMojo. This is useful before making the final commit to ensure everything works.
  • magic run test - This command runs test, packages NuMojo.
  • magic run format - This command does the same as mojo format ./
  • magic run package - This command does the same as mojo package numojo

• some functions such as sort, flatten are done inplace for internal methods so that we have the following,

  import numojo as nj
  var arr = NDArray[i32](10, 10)
  arr.sort() # sorts it in place
  var arr_sorted = nj.sort(arr) # creates a new array and sorts it

• Added some other basic functions such as diagflat, tri, trace etc.

• Added Transpose T() method to transpose inplace (support only 2D arrays for now)

  var arr = NDArray(2,2)
  arr.T()

• Added a new constructor to initialize arrays from numpy arrays (works only for float64 currently).

  var np = Python.import_module("numpy")
  var np_arr = np.arange(1, 10, 1).reshape(3,3)
  var nj_array = NDArray(data = np_arr)

[forFudan]

I have one suggestion on the name of the function: use numojo.sort() instead of numojo.sorted(). This means that when the function is a function, it first creates a copy and then make the in-place sort; when the function is a method of NDArray, it just conduct an in-place sort of the array itself. That is:

var arr_sorted = nj.sort(ar) # creates a new array and sorts it

[shivasankarka]

@forFudan Yes, you are right, I forgot to make that change. I will change it in the PR.