feat(query): add error_or function

[sundy-li]

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Summary

• add is_error, is_not_error function

🐳 :) select   is_error(from_base64('aj')),   is_not_error(from_base64('ac')), is_error(3);
┌─────────────────────────────────────────────────────────────────────────────┐
│ is_error(from_base64('aj')) │ is_not_error(from_base64('ac')) │ is_error(3) │
│           Boolean           │             Boolean             │   Boolean   │
├─────────────────────────────┼─────────────────────────────────┼─────────────┤
│ true                        │ false                           │ false       │
└─────────────────────────────────────────────────────────────────────────────┘

• add error_or function which returns the first none-error arg as value or null if all arguments are error.

🐳 :) select error_or( from_base64('aak') ,  from_base64('aaj'),  from_base64('MzQz')  );
┌───────────────────────────────────────────────────────────────────────┐
│ error_or(from_base64('aak'), from_base64('aaj'), from_base64('mzqz')) │
│                            Nullable(Binary)                           │
├───────────────────────────────────────────────────────────────────────┤
│ 333433                                                                │
└───────────────────────────────────────────────────────────────────────┘
1 row read in 0.028 sec.

• Fixes bug: FROM_BASE64 function fails on invalid Base64 string instead of returning NULL. #14968

Tests

• Unit Test
• Logic Test
• Benchmark Test
• No Test - Explain why

Type of change

• Bug Fix (non-breaking change which fixes an issue)
• New Feature (non-breaking change which adds functionality)
• Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• Documentation Update
• Refactoring
• Performance Improvement
• Other (please describe):

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This change is 

[PsiACE]

lgtm

[PsiACE]

I found an unrelated issue, maybe we shouldn't always lowercase everything in the header. from_base64('MzQz') and from_base64('mzqz') are different. Strings should remain as they are.

[BohuTANG]

@soyeric128 Please update the documentation for new functions introduced in this PR. Thanks!