[Farmware] Support specifying a specific Farmware Tools version

[gabrielburnworth]

FarmBot OS version

8.0.0-rc26

Relevant code

farmbot_os/farmbot_core/lib/farmbot_core/asset_workers/farmware_installation_worker.ex

Lines 181 to 186 in 810f04e

	release_url = "https://api.github.com/repos/FarmBot-Labs/farmware-tools/releases/latest"
	# if version == "latest" do
	# "https://api.github.com/repos/FarmBot-Labs/farmware-tools/releases/latest"
	# else
	# "https://api.github.com/repos/FarmBot-Labs/farmware-tools/releases/tags/#{version}"
	# end

The latest release URL is temporarily hard-coded into the line above. Previously the manifest farmware_tools_version field either specified a release tag version (e.g., v2.0.0) or latest. Now that the farmware_tools_version_requirement field is a version requirement (e.g., >=2.0.0), FarmBot OS needs to pick the latest release tag that satisfies the version requirement specified in the manifest.