feat: add a generic API request interface (#384)

# Description

Adds a generic API request interface to make arbitrary API requests.
<!-- Please provide a general summary of your PR changes and link any
related issues or other pull requests. -->

# Testing

<!-- 
Please provide details on how you tested this code. See below.

- All pull requests must be tested (unit tests where possible with
accompanying cassettes, or provide a screenshot of end-to-end testing
when unit tests are not possible)
- New features must get a new unit test
- Bug fixes/refactors must re-record existing cassettes 
-->

# Pull Request Type

Please select the option(s) that are relevant to this PR.

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Improvement (fixing a typo, updating readme, renaming a variable
name, etc)

fix: return type of carrier_account.all (closes #386) (#387)

# Description

<!-- Please provide a general summary of your PR changes and link any
related issues or other pull requests. -->

# Testing

<!-- 
Please provide details on how you tested this code. See below.

- All pull requests must be tested (unit tests where possible with
accompanying cassettes, or provide a screenshot of end-to-end testing
when unit tests are not possible)
- New features must get a new unit test
- Bug fixes/refactors must re-record existing cassettes 
-->

# Pull Request Type

Please select the option(s) that are relevant to this PR.

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Improvement (fixing a typo, updating readme, renaming a variable
name, etc)

chore: prep v10.5.0 for release (#385)

# Description

<!-- Please provide a general summary of your PR changes and link any
related issues or other pull requests. -->

# Testing

<!-- 
Please provide details on how you tested this code. See below.

- All pull requests must be tested (unit tests where possible with
accompanying cassettes, or provide a screenshot of end-to-end testing
when unit tests are not possible)
- New features must get a new unit test
- Bug fixes/refactors must re-record existing cassettes 
-->

# Pull Request Type

Please select the option(s) that are relevant to this PR.

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Improvement (fixing a typo, updating readme, renaming a variable
name, etc)

feat: delete tracker (#382)

# Description

<!-- Please provide a general summary of your PR changes and link any
related issues or other pull requests. -->

# Testing

<!-- 
Please provide details on how you tested this code. See below.

- All pull requests must be tested (unit tests where possible with
accompanying cassettes, or provide a screenshot of end-to-end testing
when unit tests are not possible)
- New features must get a new unit test
- Bug fixes/refactors must re-record existing cassettes 
-->

# Pull Request Type

Please select the option(s) that are relevant to this PR.

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Improvement (fixing a typo, updating readme, renaming a variable
name, etc)

Merge pull request #375 from EasyPost/v10.3.0

chore: prep v10.3.0

Merge pull request #373 from EasyPost/SHPE-484_verify_carrier

feat: adds verify_carrier address param

Merge pull request #366 from EasyPost/v10.1.0

chore: prep v10.1.0 for release

Merge pull request #361 from EasyPost/ups_endpoint

fix: endpoint used for UPS create/update

Merge pull request #360 from EasyPost/v10.0.0

chore: prep v10.0.0 for release

Merge pull request #354 from EasyPost/tracking_codes_all_param

feat: add tracking_codes as param for all on TrackerService