RPG parser CLI

[ajshedivy]

Changes

Add RPG parser cli for AI tools.

to test cli:

1. checkout feat/rpgparser-cli
2. navigate to cli directory

cd cli/rpgparser

3. build cli:

npm i 
npm run webpack:dev

4. test cli:

node dist/index.js -h
node dist/index.js --files test/copy1.rpgle -o test.json          

Output:

{
  "keyword": {},
  "parameters": [],
  "subroutines": [],
  "procedures": [
    {
      "type": "procedure",
      "name": "theExtProcedure",
      "keyword": {
        "EXTPROC": true
      },
      "description": "",
      "tags": [],
      "position": {
        "path": "/Users/adamshedivy/Documents/IBM/sandbox/oss/vscode/vscode-rpgle/cli/rpgparse/test/copy1.rpgle",
        "range": {
          "start": 15,
          "end": 30,
          "line": 2
        }
      },
      "references": [
        {
          "uri": "/Users/adamshedivy/Documents/IBM/sandbox/oss/vscode/vscode-rpgle/cli/rpgparse/test/copy1.rpgle",
          "offset": {
            "start": 15,
            "end": 30,
            "line": 2
          }
        }
      ],
      "subItems": [
        {
          "type": "subitem",
          "name": "theNewValue",
          "keyword": {
            "CHAR": "20"
          },
          "description": "",
          "tags": [],
          "position": {
            "path": "/Users/adamshedivy/Documents/IBM/sandbox/oss/vscode/vscode-rpgle/cli/rpgparse/test/copy1.rpgle",
            "range": {
              "start": 42,
              "end": 53,
              "line": 3
            }
          },
          "references": [
            {
              "uri": "/Users/adamshedivy/Documents/IBM/sandbox/oss/vscode/vscode-rpgle/cli/rpgparse/test/copy1.rpgle",
              "offset": {
                "start": 42,
                "end": 53,
                "line": 3
              }
            }
          ],
          "subItems": [],
          "readParms": false,
          "range": {
            "start": null,
            "end": null
          }
        }
      ],
      "readParms": true,
      "range": {
        "start": 2,
        "end": 4
      }
    }
  ],
  "files": [],
  "variables": [],
  "structs": [],
  "constants": [],
  "sqlReferences": [],
  "indicators": [],
  "tags": [],
  "includes": []
}

Current usage:

Usage: "" [options]

Options:
  -f, --files <glob>       Specify the files to scan (required)
  -c, --cwd <directory>    Specify the current working directory
  -d, --outdir <directory> Specify the output directory
  -o, --output <file>      Specify the output file
  -h, --help               Display this help message

TODO:

• how should cli handle reference paths ?
• test and package on npm
• documentation

Checklist

• have tested my change
• updated relevant documentation
• Remove any/all console.logs I added
• eslint is not complaining
• have added myself to the contributors' list in the README
• for feature PRs: PR only includes one feature enhancement.