program: Port history from SPL

[joncinque]

Problem

It's time to move over the SPL program implementations to their specific repos, but it hasn't been done.

Summary of changes

Following the PR for the feature proposal program at solana-program/feature-proposal#1, but for SPL. 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 instruction-padding/program/src/entrypoint.rs \
  --path instruction-padding/program/src/lib.rs \
  --path instruction-padding/program/src/processor.rs \
  --path instruction-padding/program/src/instruction.rs \
  --path instruction-padding/program/tests/noop.rs \
  --path instruction-padding/program/tests/system.rs \
  --path instruction-padding/program/Cargo.toml \
  --path instruction-padding/program/README.md \
  --path-rename instruction-padding/program/src/instruction.rs:program/src/instruction.rs \
  --path-rename instruction-padding/program/src/entrypoint.rs:program/src/entrypoint.rs \
  --path-rename instruction-padding/program/src/processor.rs:program/src/processor.rs \
  --path-rename instruction-padding/program/src/lib.rs:program/src/lib.rs \
  --path-rename instruction-padding/program/Cargo.toml:program/Cargo.toml \
  --path-rename instruction-padding/program/tests/noop.rs:program/tests/noop.rs \
  --path-rename instruction-padding/program/tests/system.rs:program/tests/system.rs \
  --path-rename instruction-padding/program/README.md:program/README.md \
  --force
# re-add this repo
git remote add origin [email protected]:joncinque/instruction-padding.git
git fetch origin main
git switch main
git switch fromspl
git rebase main

[febo]

👌

[joncinque]

I don't know why it keeps squashing, I'll just push by hand to all of these