extract expressions to folders based on spark grouping

[rluvaton]

Rationale for this change

Making it easier to find functions and add stuff at the right location

the sub folder name are named after Spark ExpressionDescription group property

What changes are included in this PR?

just reorder files and extract functions there are no logic changes

How are these changes tested?

Existing tests

[andygrove]

Thanks @rluvaton. This is a good idea.

[rluvaton]

Thanks @andygrove, The PR is now ready, I moved all the functions to the correct location

[andygrove]

Thanks @andygrove, The PR is now ready, I moved all the functions to the correct location

Awesome. I plan on reviewing this later this week.

[andygrove]

@rluvaton I think that this looks great but it is challenging to really review the PR with so many changes.

What do you think about breaking this down into some smaller PRs that are easier to review? For example, maybe the first PR just moves string expressions.

[rluvaton]

No problem

[rluvaton]

@rluvaton I think that this looks great but it is challenging to really review the PR with so many changes.

What do you think about breaking this down into some smaller PRs that are easier to review? For example, maybe the first PR just moves string expressions.

@andygrove I split to the following PRs

• chore: extract strings file to strings_func like in spark grouping #1215
• chore: extract struct expressions to folders based on spark grouping #1216
• chore: extract static invoke expressions to folders based on spark grouping #1217
• chore: extract predicate_functions expressions to folders based on spark grouping #1218
• chore: extract math_funcs expressions to folders based on spark grouping #1219
• chore: extract json_funcs expressions to folders based on spark grouping #1220
• chore: extract hash_funcs expressions to folders based on spark grouping #1221
• chore: extract datetime_funcs expressions to folders based on spark grouping #1222
• chore: extract conversion_funcs, conditional_funcs, bitwise_funcs and array_funcs expressions to folders based on spark grouping #1223
• chore: extract agg_funcs expressions to folders based on spark grouping #1224

Not closing this PR yet as I wanna make sure after everything is merged this PR is empty