Slightly simplifies the `parsePacks` function.

Extract a `runTool` function that captures the stdout and returns it.
A small refactoring that reduces copied code.

Uses two pre-existing packages to run some simple queries on a javascript
database.

1. Better malformed data guard for PackDownloadOutput
2. Fix Packs type
3. Remove TODO in init-action

Mergeback v1.0.1 refs/heads/v1 into main

Remove quotes around `$DRAFT` argument

gh will complain if there is an empty `""`, which is the case if
`$DRAFT` is unset.

Merge main into v1

Add back retrying.

Use strings instead. They are easier to serialize and deserialize.

During the analyze phase.

This commit adds a `packs` option to the codeql-config.yml file. Users
can specify a list of ql packs to include in the analysis.

For a single language analysis, the packs property looks like this:

```yaml
packs:
  - pack-scope/pack-name1@1.2.3
  - pack-scope/pack-name2   # no explicit version means download the latest
```

For multi-language analysis, you must key the packs block by lanaguage:

```yaml
packs:
  cpp:
    - pack-scope/pack-name1@1.2.3
    - pack-scope/pack-name2
  java:
    - pack-scope/pack-name3@1.2.3
    - pack-scope/pack-name4
```

This implementation adds a new analysis run (alongside custom and 
builtin runs). The unit tests indicate that the correct commands are
being run, but I have not actually tried this with a real CLI.

Also, convert `instanceof Array` to `Array.isArray` since that is
sightly better in some situations. See:
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray#instanceof_vs_isarray

Add environment variables to signal feature and version to the CLI

Also, move `getTemporaryDirectory` back to `actions-util`.

Must access the env var directly in order to avoid recursive calls to 
`getRequiredEnvParam`.