(core) Configure more comprehensive eslint rules for Typescript

Summary:
- Update rules to be more like we've had with tslint
- Switch tsserver plugin to eslint (tsserver makes for a much faster way to lint in editors)
- Apply suggested auto-fixes
- Fix all lint errors and warnings in core/, app/, test/

Test Plan: Some behavior may change subtly (e.g. added missing awaits), relying on existing tests to catch problems.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D2785

app/client/models/DataTableModelWithDiff.ts

@@ -27,13 +27,6 @@ const ROW_ID_SKIP = -1;
  * This should be the only part of the code that knows that.
  */
 export class ExtraRows {
-  readonly leftTableDelta?: TableDelta;
-  readonly rightTableDelta?: TableDelta;
-  readonly rightAddRows: Set<number>;
-  readonly rightRemoveRows: Set<number>;
-  readonly leftAddRows: Set<number>;
-  readonly leftRemoveRows: Set<number>;
-
   /**
    * Map back from a possibly synthetic row id to an original strictly-positive row id.
    */
@@ -44,7 +37,14 @@ export class ExtraRows {
     return { type: 'local-remove', id: -(rowId + 2) / 2 };
   }
 
-  public constructor(readonly tableId: string, readonly comparison?: DocStateComparisonDetails) {
+  public readonly leftTableDelta?: TableDelta;
+  public readonly rightTableDelta?: TableDelta;
+  public readonly rightAddRows: Set<number>;
+  public readonly rightRemoveRows: Set<number>;
+  public readonly leftAddRows: Set<number>;
+  public readonly leftRemoveRows: Set<number>;
+
+  public constructor(public readonly tableId: string, public readonly comparison?: DocStateComparisonDetails) {
     const remoteTableId = getRemoteTableId(tableId, comparison);
     this.leftTableDelta = this.comparison?.leftChanges?.tableDeltas[tableId];
     if (remoteTableId) {