List paginators

[DyfanJones]

This PR add feature to list all paginators per paws client:

library(paws)

paws.common::list_paginators(s3())
#> [1] "list_multipart_uploads" "list_object_versions"   "list_objects"          
#> [4] "list_objects_v2"        "list_parts"

paws.common::list_paginators(athena())
#>  [1] "get_query_results"           "list_application_dpu_sizes" 
#>  [3] "list_calculation_executions" "list_capacity_reservations" 
#>  [5] "list_data_catalogs"          "list_databases"             
#>  [7] "list_engine_versions"        "list_executors"             
#>  [9] "list_named_queries"          "list_prepared_statements"   
#> [11] "list_query_executions"       "list_sessions"              
#> [13] "list_table_metadata"         "list_tags_for_resource"     
#> [15] "list_work_groups"

^{Created on 2023-08-08 with reprex v2.0.2}

[codecov[bot]]

Codecov Report

Patch coverage has no change and project coverage change: +0.01% :tada:

Comparison is base (3d93755) 83.90% compared to head (90d0dec) 83.91%.

:exclamation: Current head 90d0dec differs from pull request most recent head f0d79c8. Consider uploading reports for the commit f0d79c8 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #653 +/- ## ========================================== + Coverage 83.90% 83.91% +0.01% ========================================== Files 198 198 Lines 13819 13861 +42 ========================================== + Hits 11595 11632 +37 - Misses 2224 2229 +5 ``` [see 9 files with indirect coverage changes](https://app.codecov.io/gh/paws-r/paws/pull/653/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=paws-r)

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