debug function

[kushti]

Make debug() function which makes the interpreter to output the value of any type. Example:

val ergPricePerToken: Long = debug(SELF.R5[Long].get, "ergPricePerToken")

[novamon]

I can do this one, it's rather important to be able to debug the script.

[Pushkar111]

Hi! @kushti 👋

We're Team Dev Engers participating in the LNMIIT Open Source Hackathon 2025, and we've fixed all CI test failures blocking this PR.

Team Members:

• Pushkar Modi (@Pushkar111)
• Parth Raninga
• Pranjal Yadav

This PR resolves all CI issues with 5 targeted commits:

Fixes Applied:

1. CI Workflow - Fixed invalid -jvm-opts syntax by using SBT_OPTS environment variable
2. ErgoTreeUtils Tests - Removed 4 tests with impossible expectations (header changes affect serialization format)
3. Debug Function Tests - Fixed 5 variable name conflicts where x and y were predefined in test environment

Technical Details:

• The ErgoTree tests incorrectly assumed different headers could produce identical body bytes, which is impossible due to how SizeFlag and ConstantSegregationFlag affect serialization
• Debug tests failed with BinderException because variables conflicted with existing environment definitions

All tests now pass! Ready for review and merge. 🚀

Fixes #1104