Improve res handling in tc_analysis

[forsyth2]

Summary

Objectives:

• Add res parameter for users to set resolution explicitly, in the case that zppy can't infer it.
• Fix the regex pattern matching that caused incorrect resolution inference for some grids.

Issue resolution:

• Closes [Bug]: tc_analysis task won't infer resolution res from ne120ne4pg2 files #688

Select one: This pull request is...

• a bug fix: increment the patch version
• a small improvement: increment the minor version
• a new feature: increment the minor version
• an incompatible (non-backwards compatible) API change: increment the major version

Small Change

• To merge, I will use "Squash and merge". That is, this change should be a single commit.
• Logic: I have visually inspected the entire pull request myself.
• Pre-commit checks: All the pre-commits checks have passed.

[forsyth2]

@chengzhuzhang Please 1) visually inspect the changes in the zppy directory and 2) run the cfg that was initially causing issues with this updated code.

Once I get approval to merge this, I can work on the next zppy RC.