feat: rewrite to run on plv8 and add support for pg_tle

[mhmd-azeez]

• make sure the api matchs js-sdk as much as possible. CurrentPlugin's functions don't match currently
• WASI
• tests
• Better readme
• CI

[mhmd-azeez]

i updated the readme a bit, but still not very happy with it. however, I am going to merge the PR and come back to it later on. One thing that doesn't work is Haskell plugins:

PS D:\dylibso\pg_extism> npm run test

> @extism/extism-plv8@1.0.0-rc1 test
> cross-env NODE_OPTIONS='--experimental-wasi-unstable-preview1' jest --coverage --config jest.config.js

  console.debug
    Haskell (reactor) runtime detected.

      at debug (src/index.ts:631:11)

  console.log
    newBoundTask: RTS is not initialised; call hs_init() first

      at log (src/index.ts:423:17)

  console.log


      at log (src/index.ts:423:17)

 FAIL  tests/index.test.ts
  test extism
    √ fails on hash mismatch (32 ms)
    √ can create and call a plugin (8 ms)
    √ can detect if function exists or not (4 ms)
    √ errors when function is not known (8 ms)
    √ plugin can allocate memory (268 ms)
    √ plugin can fail gracefuly (4 ms)
    √ host functions works (7 ms)
    √ can deny http requests (10 ms)
    × can initialize haskell runtime (60 ms)

  ● test extism › can initialize haskell runtime

    proc_exit: 1

      489 |       },
      490 |       proc_exit(rval: number): void {
    > 491 |         throw new Error(`proc_exit: ${rval}`);
          |               ^
      492 |       },
      493 |       clock_time_get(id: number, precision: bigint, time: number): number {
      494 |         const buffer = new DataView(memory().buffer);

      at proc_exit (src/index.ts:491:15)
      at __wasi_proc_exit (wasm:/wasm/00459472:1:27082)
      at _Exit (wasm:/wasm/00459472:1:45622)
      at exit (wasm:/wasm/00459472:1:90271)
      at stg_exit (wasm:/wasm/00459472:1:695506)
      at newBoundTask (wasm:/wasm/00459472:1:82416)
      at rts_lock (wasm:/wasm/00459472:1:572802)
      at testing (wasm:/wasm/00459472:1:790932)
      at Plugin.func [as callRaw] (src/index.ts:101:5)
      at Plugin.callRaw [as call] (src/index.ts:107:25)
      at Object.<anonymous> (tests/index.test.ts:124:35)

----------|---------|----------|---------|---------|--------------------------------------------------------------------------------------------------------
File      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s
----------|---------|----------|---------|---------|--------------------------------------------------------------------------------------------------------
All files |   64.28 |    48.61 |   59.09 |   64.72 |
 index.ts |   64.28 |    48.61 |   59.09 |   64.72 | ...399,430-488,494-525,533,539-550,561,586,588-592,598,627,647,650,655-657,669,707-732,775,796,814,824
----------|---------|----------|---------|---------|--------------------------------------------------------------------------------------------------------
Test Suites: 1 failed, 1 total
Tests:       1 failed, 8 passed, 9 total
Snapshots:   0 total
Time:        1.681 s, estimated 2 s
Ran all test suites.

I will open a new issue for it