try removing mocha in favor of node test runner

[vkarpov15]

What this PR does:

Test out removing mocha in favor of Node test runner to minimize risk of any future compatibility issues with TypeScript. Big caveat: Node test runner runs tests from different test files in parallel by default, e.g. test/a.test.ts and test/b.test.ts will run in parallel, but tests within those files will run in series. To avoid that, I set --test-concurrency=1

Which issue(s) this PR fixes:
Fixes #

Checklist

• Changes manually tested
• Automated Tests added/updated
• Documentation added/updated
• CLA Signed: DataStax CLA

[Copilot]

Pull request overview

This PR migrates the repo’s TypeScript test suite from Mocha to Node’s built-in node:test runner, aiming to reduce future TypeScript compatibility risk while keeping cross-file test parallelism disabled via --test-concurrency=1.

Changes:

• Remove Mocha typings/dependencies and update TS config accordingly.
• Update test files to import describe/it/hooks from node:test and replace Mocha-only patterns like this.skip().
• Add a bin/run-tests.ts wrapper and update scripts/docs to support -g/--grep via Node’s --test-name-pattern.

Reviewed changes

Copilot reviewed 17 out of 19 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
tsconfig.json	Drops Mocha typings so tests compile against Node types only.
package.json	Removes Mocha deps/config and switches test* scripts to the new Node test runner wrapper.
DEVGUIDE.md	Documents running a subset of tests via -g/--grep.
bin/run-tests.ts	New wrapper that translates Mocha-style -g/--grep into Node --test-name-pattern and runs node --test.
tests/udt/udtDefinitionsFromSchema.test.ts	Imports describe/it from node:test.
tests/udt/convertSchemaToUDTColumns.test.ts	Imports describe/it from node:test.
tests/tableDefinitionFromSchema.test.ts	Imports describe/it from node:test.
tests/serialize.test.ts	Imports describe/it from node:test.
tests/parseUri.test.ts	Imports describe/it from node:test.
tests/mongooseFixtures.ts	Switches teardown registration to after from node:test.
tests/driver/tables.vector.test.ts	Switches hooks to node:test and uses suite-level { skip: ... } instead of this.skip().
tests/driver/tables.test.ts	Switches hooks to node:test.
tests/driver/tables.driver.test.ts	Switches hooks to node:test.
tests/driver/tables.api.test.ts	Switches hooks to node:test and removes Mocha-only timeout usage.
tests/driver/collections.driver.test.ts	Switches hooks to node:test and removes Mocha-only timeout usage.
tests/driver/collections.api.test.ts	Switches hooks to node:test and uses suite-level { skip: ... } / t.skip() patterns.
tests/createAstraUri.test.ts	Imports describe/it from node:test.
tests/convertSchemaToColumns.test.ts	Switches hooks to node:test.
tests/collections/options.test.ts	Switches hooks to node:test and removes Mocha-only timeout usage.

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