Permit running without node_modules

Right now svekyll-cli expects node_modules for pulling templates. This works if you have installed svekyll-cli a priori using package.json, but not when running *npx svekyll-cli. We can probably fix this by detecting when we are running that way and augmenting the paths appropriately.

Running SVEKYLL_REPORT=1 pnpx svekyll-cli | grep pnpx results in nothing:

This is what we see with SVEKYLL_REPORT=1 npx svekyll-cli | grep npx

  _: '/home/chrisdawson/.yarn/bin/npx'

I was hoping we could see clearly from the environment that npx or pnpx was running the show, but it isn't that easy. We will probably need to check to see if node_modules exists, and if not, the search through the NODE_PATHs, etc.

This is what we see with SVEKYLL_REPORT=1 npx svekyll-cli (after some filtering). So NODE_PATH includes the pnpm tmp path, and perhaps we can figure out the templates from there.

SVEKYLL_REPORT=1 pnpx svekyll-cli build
.../.pnpm-home/store/v3/tmp/dlx-316838   |  WARN  deprecated mkdirp@0.3.0
.../.pnpm-home/store/v3/tmp/dlx-316838   |  WARN  deprecated stable@0.1.8
.../.pnpm-home/store/v3/tmp/dlx-316838   | +469 +++++++++++++++++++++++++++++++++++++++++++++++
.../.pnpm-home/store/v3/tmp/dlx-316838   | Progress: resolved 490, reused 467, downloaded 1, added 469, done
 WARN  Issues with peer dependencies found
.
└─┬ svekyll-cli 0.0.85
  ├─┬ layercake 7.6.1
  │ └── ✕ missing peer typescript@^5.0.2
  ├─┬ svelte-preprocess 5.0.4
  │ └── ✕ missing peer typescript@">=3.9.5 || ^4.0.0 || ^5.0.0"
  └─┬ vite-plugin-singlefile 0.13.5
    └── ✕ missing peer rollup@>=2.79.0
Peer dependencies that should be installed:
  rollup@>=2.79.0              typescript@">=5.0.2 <6.0.0"  
SVEKYLL cwd /home/chrisdawson/Projects/ExtraStatic/blogs/blog-example-com
SVEKYLL ENV {
  SHELL: '/run/current-system/sw/bin/bash',
  PNPM_HOME: '/home/chrisdawson/.pnpm-home',
  SYSTEMD_EXEC_PID: '2273',
  NIXPKGS_CONFIG: '/etc/nix/nixpkgs-config.nix',
  CXX: 'g++',
  XAUTHORITY: '/home/chrisdawson/.Xauthority',
  TEMPDIR: '/run/user/1000',
  system: 'x86_64-linux',
  HOME: '/home/chrisdawson',
  SVEKYLL_REPORT: '1',
  MANAGERPID: '2104',
  READELF: 'readelf',
  GTK_A11Y: 'none',
  KDE_SESSION_UID: '1000',
  USER: 'chrisdawson',
  COLORFGBG: '0;15',
  TZDIR: '/etc/zoneinfo',
  TERMINFO_DIRS: '/home/chrisdawson/.nix-profile/share/terminfo:/etc/profiles/per-user/chrisdawson/share/terminfo:/nix/var/nix/profiles/default/share/terminfo:/run/current-system/sw/share/terminfo',
  LD_LIBRARY_PATH: '/nix/store/j25bk9yxdqcvrirx4vvrxpaiw1cfr0sm-  NODE_PATH: '/nix/store/0g3sc6fhnhsxx8d837kyj06qcbjind1b-nodejs-18.16.1/lib/node_modules:/home/chrisdawson/.pnpm-home/global/5/.pnpm/node_modules:/home/chrisdawson/.pnpm-home/store/v3/tmp/dlx-316838/node_modules/.pnpm/node_modules',
  TMP: '/run/user/1000',
  OBJDUMP: 'objdump',
  PATH: '/home/chrisdawson/.pnpm-home/store/v3/tmp/dlx-316838/node_modules/.bin:/home/chrisdawson/.yarn/bin:/home/chrisdawson/.yarn/bin:/home/chrisdawson/.yarn/bin',
  propagatedBuildInputs: '',
  CC: 'gcc',
  CONFIG_SHELL: '/nix/store/7q1b1bsmxi91zci6g8714rcljl620y7f-bash-5.2-p15/bin/bash',
  __structuredAttrs: '',
  RANLIB: 'ranlib',
}