Move opencsv to be non-shaded

[nvoxland]

Description

Rather than shading opencsv into the liquibase-core.jar, define it as a dependency in the shipped pom.xml and include it as a separate jar in the internal/lib directory.

Opencsv has dependencies on commons-collections4, commons-lang3, and commons-text so they are will be in the internal/lib directory as well.

Partly addresses #2852 but not fully so not marking it as "fixes"

Expected changes

• No liquibase/repackaged directory in liquibase-core.jar anymore
• commons-collections4.jar added to to internal/lib
• commons-lang3.jar added to to internal/lib
• commons-text.jar added to to internal/lib
• opencsv.jar added to internal/lib
• Nothing else new added to internal/lib

Testing

The CLI and maven plugin should continue to handle changelogs with loadData pointing to CSV files with no issues.

[github-actions]

Unit Test Results

  4 524 files  ±0    4 524 suites  ±0   32m 28s ⏱️ -22s
  4 422 tests ±0    4 208 ✔️ ±0     214 💤 ±0  0 ❌ ±0 
52 344 runs  ±0  47 336 ✔️ ±0  5 008 💤 ±0  0 ❌ ±0 

Results for commit c84b7fa. ± Comparison against base commit c1a67a7.

[FBurguer]

There is still a liquibase/repackaged dir in liquibase-core.jar, it has nothing to do with opencsv though, so thats fine.
The shipped pom file has the correct dependency and all 4 of the needed jar file are shipped in internal/lib as well.