feat(sshclient): add a promise-first SSH client with secure host verification and improve SSH key/config handling

ts/smartssh.classes.sshinstance.ts

@@ -1,8 +1,7 @@
 import * as plugins from './smartssh.plugins.js';
-import * as helpers from './smartssh.classes.helpers.js';
 
 import { SshDir } from './smartssh.classes.sshdir.js';
-import { SshConfig } from './smartssh.classes.sshconfig.js';
+import { SshConfig, type ISshConfigOptions } from './smartssh.classes.sshconfig.js';
 import { SshKey } from './smartssh.classes.sshkey.js';
 
 /**
@@ -13,10 +12,12 @@ export class SshInstance {
   private _sshConfig: SshConfig; // sshConfig (e.g. represents ~/.ssh/config)
   private _sshDir: SshDir; // points to sshDir class instance.
   private _sshSync: boolean; // if set to true, the ssh dir will be kept in sync automatically
-  constructor(optionsArg: { sshDirPath?: string; sshSync?: boolean } = {}) {
+  constructor(optionsArg: { sshDirPath?: string; sshSync?: boolean } & ISshConfigOptions = {}) {
     optionsArg ? void 0 : (optionsArg = {});
     this._sshKeyArray = [];
-    this._sshConfig = new SshConfig(this._sshKeyArray);
+    this._sshConfig = new SshConfig(this._sshKeyArray, {
+      strictHostKeyChecking: optionsArg.strictHostKeyChecking,
+    });
     this._sshDir = new SshDir(this._sshKeyArray, this._sshConfig, optionsArg.sshDirPath);
     this._sshSync = optionsArg.sshSync ?? false;
   }
@@ -29,10 +30,10 @@ export class SshInstance {
   }
   removeKey(sshKeyArg: SshKey) {
     this._syncAuto('from');
-    let filteredArray = this._sshKeyArray.filter((sshKeyArg2: SshKey) => {
-      return sshKeyArg != sshKeyArg2;
-    });
-    this._sshKeyArray = filteredArray;
+    const sshKeyIndex = this._sshKeyArray.indexOf(sshKeyArg);
+    if (sshKeyIndex >= 0) {
+      this._sshKeyArray.splice(sshKeyIndex, 1);
+    }
     this._syncAuto('to');
   }
   replaceKey(sshKeyOldArg: SshKey, sshKeyNewArg: SshKey) {