Better Dynamic converter

[w1ndy]

Pull Request Description

This PR improves the conversion of Dynamic into different types of values. Major changes includes:

• Support the conversion of Dynamic into slices (as far as I know there is no way to do this with the latest release)
• Support the conversion of Dynamic into map[string]struct
• Reuse code for converting Dynamic into pointer values
• Add tests

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Future Release Comment

[Add description of your change, to include in the next release]
[Delete any or all irrelevant sections, e.g. if your change does not warrant a release comment at all]

Fixes:

• Support the conversion of Dynamic into slices

[codecov-commenter]

Codecov Report

Merging #78 (502f43f) into master (ca7cd57) will increase coverage by 0.83%.
The diff coverage is 65.21%.

@@            Coverage Diff             @@
##           master      #78      +/-   ##
==========================================
+ Coverage   47.20%   48.04%   +0.83%     
==========================================
  Files          39       39              
  Lines        4226     4196      -30     
==========================================
+ Hits         1995     2016      +21     
+ Misses       2086     2032      -54     
- Partials      145      148       +3     

Impacted Files	Coverage Δ
kusto/data/value/dynamic.go	61.42% <65.21%> (+42.42%)	⬆️
kusto/test/etoe/etoe_env.go	42.00% <0.00%> (-6.00%)	⬇️

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[AsafMah]

Great job!

I hope you won't mind that I did some work on the tests - modernized them and added negative tests.

[github-actions]

Unit Test Results

    1 files  ±  0    13 suites  ±0   9s ⏱️ - 11m 42s
125 tests +15  112 ✔️ +7  13 💤 +13  0 ❌  - 5 

Results for commit 98c6e81. ± Comparison against base commit 75e351f.

This pull request removes 27 and adds 42 tests. Note that renamed tests count towards both.

etoe ‑ TestFileIngestion/Ingest_from_blob_with_bad_existing_mapping
etoe ‑ TestFileIngestion/Ingest_from_blob_with_existing_mapping
etoe ‑ TestFileIngestion/Ingest_from_blob_with_inline_mapping
etoe ‑ TestFileIngestion/Ingest_from_blob_with_streaming_ingestion_should_fail
etoe ‑ TestFileIngestion/Ingest_from_local_with_existing_mapping_streaming
etoe ‑ TestFileIngestion/Ingestion_from_local_file_queued
etoe ‑ TestFileIngestion/Ingestion_from_local_file_streaming
etoe ‑ TestFileIngestion/Ingestion_from_local_file_test_2_queued
etoe ‑ TestFileIngestion/Ingestion_from_local_file_test_2_streaming
etoe ‑ TestMultipleClusters/Ingestion_from_local_file_streaming
…

table ‑ TestFieldsConvert/non-valid_Bool
table ‑ TestFieldsConvert/non-valid_DateTime
table ‑ TestFieldsConvert/non-valid_Dynamic
table ‑ TestFieldsConvert/non-valid_Dynamic_list
table ‑ TestFieldsConvert/non-valid_GUID
table ‑ TestFieldsConvert/non-valid_Int
table ‑ TestFieldsConvert/non-valid_Long
table ‑ TestFieldsConvert/non-valid_String
table ‑ TestFieldsConvert/non-valid_Timespan
table ‑ TestFieldsConvert/non-valid_real
…

♻️ This comment has been updated with latest results.

[w1ndy]

@AsafMah Thanks!