refactor: Use templating to generate Clarity contracts for different deployment targets

[jbencin]

Description

This PR introduces templating to reduce repetition of certain variables. I chose Mustache because the CLI tool was easy to install and use, but we should eventually integrate something like this into Clarinet and we may want to consider alternative formats like Handlebars or Jinja (which are pretty much the same for this purpose)

This PR contains the following changes:

• Create YAML files with data for different deployment targets: mocknet, devnet, testnet, mainnet
• Convert subnet.clar and multi-miner.clar into Mustache templates
• Bash script to call Mustache and substitute contract versions and addresses in above templates
• Justfile targets to make file generation and testing quick and simple
• In Clarinet tests, get subnet contract version from above YAML files

Applicable issues

• fixes #297
• fixes #301

Additional info (benefits, drawbacks, caveats)

This does not abstract away all references to the subnet contract version (meaning it doesn't fully address #297), but I'm not sure it's worth the effort to abstract the following additional references:

• doc/getting-started.md
• core-contracts/Clarinet.toml
• testnet/stacks-node/src/tests/mod.rs

Checklist

• [ ] Test coverage for new or modified code paths
• [ ] Changelog is updated
• [ ] Required documentation changes (e.g., docs/rpc/openapi.yaml and rpc-endpoints.md for v2 endpoints, event-dispatcher.md for new events)
• [ ] New clarity functions have corresponding PR in clarity-benchmarking repo
• [ ] New integration test(s) added to bitcoin-tests.yml

[codecov[bot]]

Codecov Report

Merging #304 (57b8f8f) into develop (18b46bf) will decrease coverage by 26.28%. The diff coverage is n/a.

@@             Coverage Diff              @@
##           develop     #304       +/-   ##
============================================
- Coverage    86.27%   60.00%   -26.28%     
============================================
  Files            6        4        -2     
  Lines          357       45      -312     
  Branches        72        6       -66     
============================================
- Hits           308       27      -281     
+ Misses          49       18       -31     

Impacted Files	Coverage Δ
...ontracts/contracts/templates/helper/simple-ft.clar	58.82% <ø> (ø)
...contracts/templates/helper/simple-nft-no-mint.clar	58.33% <ø> (ø)
...ntracts/contracts/templates/helper/simple-nft.clar	60.00% <ø> (ø)
...racts/contracts/templates/helper/test-helpers.clar	100.00% <ø> (ø)

... and 2 files with indirect coverage changes

[blockstack-devops]

:tada: This PR is included in version 0.8.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: