refactor: add deprecated decorator for old SupersetView's

[dpgaspar]

SUMMARY

Small refactor that adds a decorator for deprecation warnings for old SupersetViews's API endpoints. DRY.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

TESTING INSTRUCTIONS

ADDITIONAL INFORMATION

• Has associated issue:
• Required feature flags:
• Changes UI
• Includes DB Migration (follow approval process in SIP-59)
  • Migration is atomic, supports rollback & is backwards-compatible
  • Confirm DB migration upgrade and downgrade tested
  • Runtime estimates and downtime expectations provided
• Introduces new feature or API
• Removes existing feature or API

[codecov]

Codecov Report

Merging #22113 (c398cf4) into master (7c6fabb) will decrease coverage by 1.36%.
The diff coverage is 100.00%.

❗ Current head c398cf4 differs from pull request most recent head 0e1f03a. Consider uploading reports for the commit 0e1f03a to get more accurate results

@@            Coverage Diff             @@
##           master   #22113      +/-   ##
==========================================
- Coverage   67.12%   65.76%   -1.37%     
==========================================
  Files        1831     1831              
  Lines       69994    70001       +7     
  Branches     7570     7570              
==========================================
- Hits        46984    46034     -950     
- Misses      21045    22002     +957     
  Partials     1965     1965              

Flag	Coverage Δ
hive	52.88% <91.30%> (+0.03%)	⬆️
mysql	78.41% <100.00%> (+0.01%)	⬆️
postgres	?
presto	?
python	78.73% <100.00%> (-2.85%)	⬇️
sqlite	76.94% <100.00%> (+0.01%)	⬆️
unit	?

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
superset/views/base.py	76.28% <100.00%> (+0.58%)	⬆️
superset/views/core.py	76.09% <100.00%> (+0.15%)	⬆️
superset/tables/schemas.py	0.00% <0.00%> (-100.00%)	⬇️
superset/columns/schemas.py	0.00% <0.00%> (-100.00%)	⬇️
...set/advanced_data_type/plugins/internet_address.py	16.32% <0.00%> (-79.60%)	⬇️
superset/utils/pandas_postprocessing/boxplot.py	20.51% <0.00%> (-79.49%)	⬇️
superset/charts/post_processing.py	11.76% <0.00%> (-77.95%)	⬇️
...perset/advanced_data_type/plugins/internet_port.py	18.75% <0.00%> (-77.09%)	⬇️
superset/utils/pandas_postprocessing/rolling.py	21.87% <0.00%> (-68.75%)	⬇️
...perset/utils/pandas_postprocessing/contribution.py	34.61% <0.00%> (-65.39%)	⬇️
... and 62 more

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[villebro]

Nice, LGTM.

[michael-s-molina]

Love this! Much cleaner! Thanks @dpgaspar.