Handle end_date with CCXT source when loading crypto

[northern-64bit]

Description

Closes #4230

Adds better error messages and actually handles the end_date parameter when using crypto/load --source CCXT.

How has this been tested?

Using the following commands in the crypto menu:

• load btc --start 2019-01-01 --end 2019-02-01 --source CCXT --exchange kraken
• load btc --start 2023-01-01 --end 2023-02-01 --source CCXT --exchange kraken/candle

• Make sure affected commands still run in terminal
• Ensure the SDK still works
• Check any related reports

Checklist:

• I have adhered to the GitFlow naming convention and my branch name is in the format of feature/feature-name or hotfix/hotfix-name.
• Update our documentation following these guidelines. Update any user guides that are affected by the changes.
• Update our tests following these guidelines.
• Make sure you are following our CONTRIBUTING guidelines.
• If a feature was added make sure to add it to the corresponding integration test script.

Others

• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.