Fix/Plenty: Maintenance of Tezos and Plenty connectors

[OjusWiZard]

Before submitting this PR, please make sure:

• Your code builds clean without any errors or warnings
• You are using the approved title ("feat/", "fix/", "docs/", "refactor/")

A description of the changes proposed in the pull request:

• Moved the CTez code from the Plenty connector to the Tezos connector, so that other dex connectors can use it.
• Updated the default configs of both connectors for better reliability.
• Fix some bugs in both connectors.

Tests performed by the developer:

• Successfully ran all the tests
• Ran the amm_arb strategy between gate and plenty with decent profitability.