feat: upgrading to rxdb 15.X (#100)

BREAKING CHANGE:
Upgrading to RXDB 15.X, migrations from older version has not been tested.
Potentially old databases created in 14.X need to be recreated, but may not!!

.eslintrc

@@ -0,0 +1,58 @@
+{
+    "parser": "@typescript-eslint/parser",
+    "parserOptions": {
+        "ecmaVersion": 2021,
+        "sourceType": "module",
+        "ecmaFeatures": {
+            "jsx": true
+        }
+    },
+    "ignorePatterns": [
+        "docs",
+        "docs-html",
+        "packages/*/build"
+    ],
+    "plugins": [
+        "@typescript-eslint",
+        "unused-imports"
+    ],
+    "extends": [
+        "eslint:recommended",
+        "plugin:@typescript-eslint/recommended"
+    ],
+    "rules": {
+        "no-inner-declarations": "off",
+        "comma-dangle": 0,
+        "no-unexpected-multiline": "warn",
+        "prefer-const": "warn",
+        "@typescript-eslint/no-empty-function": "off",
+        "@typescript-eslint/explicit-module-boundary-types": "off",
+        "@typescript-eslint/no-explicit-any": "off",
+        "@typescript-eslint/no-var-requires": "off",
+        "@typescript-eslint/no-namespace": "off",
+        "@typescript-eslint/no-unused-vars": [
+            "warn",
+            {
+                "vars": "all",
+                "varsIgnorePattern": "^_",
+                "args": "after-used",
+                "argsIgnorePattern": "^_"
+            }
+        ],
+        "no-unused-vars": "off",
+        "unused-imports/no-unused-imports": "error",
+        "unused-imports/no-unused-vars": "off"
+    },
+    "settings": {
+        "react": {
+            "version": "detect"
+        }
+    },
+    "env": {
+        "browser": true,
+        "node": true,
+        "jasmine": true,
+        "jest": true,
+        "es2021": true
+    }
+}

.husky/pre-commit

@@ -0,0 +1 @@
+npx eslint . --fix

.vscode/launch.json

@@ -61,7 +61,7 @@
     },
     {
       "command": "npm run test",
-      "cwd": "${workspaceFolder}/packages/iagon",
+      "cwd": "${workspaceFolder}/packages/leveldb",
       "name": "TEST",
       "request": "launch",
       "type": "node-terminal",