refactor(utils): improve `upsert` (#13)

[AxelThevenot]

refactor(utils)!: improve upsert (https://github.com/unytics/bigfunctions/issues/13)

Features /

Fixes - docs: table references must be fully qualified. - bigfunctions: procedure inserts in logs only in bigfunctions projects. https://github.com/unytics/bigfunctions/issues/87

Deprecations /

Breaking Changes - delta is changed to upsert mode. upsert function will be renamed in merge.

Issue #13

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feat(utils)!: renamed upsert for merge (https://github.com/unytics/bigfunctions/issues/13)

Features - merge function is the renamed upsert function.

Fixes /

Deprecations /

Breaking Changes - upsert does not exists anymore.

Issue https://github.com/unytics/bigfunctions/issues/13 https://github.com/unytics/bigfunctions/issues/87

[AxelThevenot]

I let you choose if you want to keep the upsert function which will call the merge function in "upsert" mode.

I do not think the upsert function is really valuable as the merge handles everything :)