Move all new graph objects out of experimental namespace

[ChuckHastings]

Moved new graph object headers out of experimental directory.

Updated all references to new graph objects to move them into the cugraph namespace.

NOTE: There will be at least one more PR to finish this job (moving a few more files around mostly)

[seunghwak]

Looks good to me, but any idea why python tests are failing?

[ChuckHastings]

Looks good to me, but any idea why python tests are failing?

It turns out that the SG python code is still calling the legacy katz_centrality implementation. I reverted the commit that removed katz_centrality. We'll have to wait for the python team to update the python code before we can remove the legacy implementation.

[codecov-commenter]

Codecov Report

❗ No coverage uploaded for pull request base (branch-21.10@f1dffc4). Click here to learn what that means.
The diff coverage is n/a.

❗ Current head fc7a8dc differs from pull request most recent head 77e694b. Consider uploading reports for the commit 77e694b to get more accurate results

@@               Coverage Diff               @@
##             branch-21.10    #1757   +/-   ##
===============================================
  Coverage                ?   59.75%           
===============================================
  Files                   ?       77           
  Lines                   ?     3523           
  Branches                ?        0           
===============================================
  Hits                    ?     2105           
  Misses                  ?     1418           
  Partials                ?        0           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f1dffc4...77e694b. Read the comment docs.

[rlratzel]

I think it looks good, but my eyes got tired after the 40th file or so.

I'm assuming the experimental C++ tests and the EXPERIMENTAL_ prefix given to test binaries will be addressed in the next PR.

[ChuckHastings]

@gpucibot merge