overridable univ3 fees/ticks literals for univ3 based dexes

[rouzwelt]

Motivation

• univ3 with overridable fees (for univ3 dexes with different fee literals than default univ3 such as pancakeswap v3).
• part of Bump support for RP4 arb-bot#136

Solution

• make uniswapv3 base class's fees and ticks overridable for child classes (dex classes)
• update DataFetcher tests to include checks for valid rp4 routes to ensures validity of dex literals
• add tests for reading fee/tick map from univ3 based dex factories and check against the literals in dexes

Checks

By submitting this for review, I'm confirming I've done the following:

• made this PR as small as possible
• unit-tested any new functionality
• linked any relevant issues or PRs

[hardyjosh]

I can't see tests for the changes that were made.

[rouzwelt]

I can't see tests for the changes that were made.

there was a missing commit, it is pushed now, but tests for dexes are in data fetcher where the loop test exists, running the datafetchere on each chain and dex and checking the results