Add more Column comparison functions

[Meosit]

Currently the many of the existing Column handy functions/operators are missing in the Kotlin API, this issue is to fulfill the gap. Here is the list of functions which can be added to the API

Infix textual functions:

• infix fun Column.neq(c: Column): Column
• infix fun Column.geq(c: Column): Column
• infix fun Column.leq(c: Column): Column
• infix fun Column.le(c: Column): Column
• infix fun Column.ge(c: Column): Column
  Also need to add infix keyword to the existing fun Column.eq(c: Column): Column function

Infix char-based functions:

• infix fun Column.`>=`(c: Column): Column
• infix fun Column.`<=`(c: Column): Column
• infix fun Column.`>`(c: Column): Column
• infix fun Column.`<`(c: Column): Column
• infix fun Column.`!=`(c: Column): Column
• infix fun Column.`||`(c: Column): Column

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Also some of the functions can be implemented via Kotlin operator functions such as compareTo/multiply/divide/plus/minus, but this needs to be double-checked

[lpicanco]

Can I get this one?