Remove default keymaps and make cmd additions optional

[derekbunch]

while configuring this plugin, i noticed a few issues that didnt play nice with my config:

1. there are forced keymaps that conflict with my keymaps and keymaps included by default in LazyVim

• i prefer to define my own keymaps in keys or have a config option to accept the default keymaps, but given that the readme suggests adding them to keys and then also force sets them in the plugin, i opted to just remove the forced keymaps

2. there were flags being passed into the dbt command at the beginning that were breaking my ability to use the plugin since my company uses a wrapper around dbt

• for this i added some config options to enable or disable these flags, and if included, moved them to the end of the command as they are flags so position does not matter

3. I added a configurable post cmd args that help me to be able to add flags to my dbt execution given the precommands are captured by the wrapper

4. i attempted to generalize the _get_package_name function (although i didnt see anywhere where it is used) as it seemed very specific to the creators environment, but i can remove this if it causes any issues, just seemed like something that wouldnt really work for anyone else so tried to make it more globally useful

[PedramNavid]

Just a couple questions before we can merge, but thanks for the thoughtful PR!

[PedramNavid]

This change will break for dbt <1.5

[derekbunch]

i thought all conditions of the statement would need to be true for it to be included?

if include_log_level and get_dbt_version() ~= nil and get_dbt_version() >= 1.5 then

if dbt_version < 1.5, wouldn't this not pass and log level not be applied even if include_log_level=true?

[PedramNavid]

wow, found an old bug thats been here for a while

[PedramNavid]

thanks for your contribution!