discriminator / pod / program-error / tlv-ar / tlv / tlv-test: Port everything from spl

[joncinque]

Problem

It's time to move over the SPL libraries to their separate repo, but it hasn't been done.

Summary of changes

Following the PR for the token-metadata program at solana-program/token-metadata#1, I ran:

# add the remote for the source repo
git remote add spl https://github.com/solana-labs/solana-program-library.git
# fetch the master from spl under a different local branch
git fetch spl master:fromspl
git switch fromspl
# be safe, remove the remote
git remote rm spl
# filter the stake related files
python3 ../../git-filter-repo \
  --path libraries/discriminator \
  --path libraries/pod \
  --path libraries/program-error \
  --path libraries/tlv-account-resolution \
  --path libraries/type-length-value \
  --path libraries/type-length-value-derive-test \
  --path-rename libraries/discriminator:discriminator \
  --path-rename libraries/pod:pod \
  --path-rename libraries/program-error:program-error \
  --path-rename libraries/type-length-value:type-length-value \
  --path-rename libraries/type-length-value-derive-test:type-length-value-derive-test \
  --force
# re-add this repo
git remote add origin git@github.com:joncinque/libraries.git
git fetch origin main
git switch main
git switch fromspl
git rebase main

[febo]

Looks good! Just to double-check: concurrent-merkle-tree, math-example, math and merkle-tree-reference were not moved intentionally?

[joncinque]

Correct, math and math-example aren't used by any programs that we deploy to mainnet, so we can leave those in SPL.

And concurrent-merkle-tree / merkle-tree-reference will be part of the account-compression repo.