add func getCompletion(from input: borrowing String) async -> String #8

	name: Two Tracks for SPM pinning
	on: [push]
	permissions:
	contents: write
	jobs:
	run-two-tracks:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout ggerganov/llama.cpp
	uses: actions/checkout@v4
	with:
	repository: ggerganov/llama.cpp

	- name: Get current llama.cpp hash
	run: \|
	echo "LLAMA_COMMIT_HASH=$( git rev-parse HEAD )" >> $GITHUB_ENV

	- name: Checkout main
	uses: actions/checkout@v4

	- name: Pinning SPM
	run: \|
	export FROM='"https://github.com/ggerganov/llama.cpp/", branch: "master"'
	export TO='"https://github.com/ggerganov/llama.cpp/", revision: "${{ env.LLAMA_COMMIT_HASH }}"'
	sed -i -e "s\|$FROM\|$TO\|" Package.swift

	- name: Push changes to pinned branch
	run: \|
	if git show-ref -q --heads pinned
	then
	git switch pinned
	git pull origin main:pinned
	else
	git switch -c pinned
	fi
	git config --global user.email "action@github.com"
	git config --global user.name "GitHub Action"
	git commit -am "pin Package.swift"
	git push -u -f origin pinned

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