Batched to_tile_catalog

[YicunDuanUMich]

• remove the for loop over batch_size in to_tile_catalog
• about 70x speedup for prcessing batch of size 64 (time decreases from about 0.7s to 0.01s)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 94.20290% with 4 lines in your changes missing coverage. Please review.

Project coverage is 80.75%. Comparing base (017a85c) to head (08ac47b).

Files	Patch %	Lines
bliss/catalog.py	94.20%	4 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1057 +/- ## ========================================== + Coverage 80.74% 80.75% +0.01% ========================================== Files 23 23 Lines 3048 3061 +13 ========================================== + Hits 2461 2472 +11 - Misses 587 589 +2 ``` | [Flag](https://app.codecov.io/gh/prob-ml/bliss/pull/1057/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=prob-ml) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/prob-ml/bliss/pull/1057/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=prob-ml) | `80.75% <94.20%> (+0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=prob-ml#carryforward-flags-in-the-pull-request-comment) to find out more.

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