feat: support the parameterized IAM Endpoint (#11)

* Provide the parameterized IAM Endpoint

Signed-off-by: JINSONG WANG <[email protected]>

* Update README for watsonx customization

Signed-off-by: JINSONG WANG <[email protected]>

* Comment for URL and IAM environment variables

Signed-off-by: JINSONG WANG <[email protected]>

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Signed-off-by: JINSONG WANG <[email protected]>

Update to `watsonx-go` Client (#10)

Signed-off-by: Robby <[email protected]>
Co-authored-by: Robby <[email protected]>

Cleanup API (#8)

Co-authored-by: Robby <[email protected]>

Fix `RepititionPenalty` from int to float (#7)

* Fix `RepititionPenalty` from int to float

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Co-authored-by: Robby <[email protected]>

Fix `RepititionPenalty` from int to float (#7)

* Fix `RepititionPenalty` from int to float

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Co-authored-by: Robby <[email protected]>

chore: modify module naming from enterprise github to public github (#1)