🏗 Refactor transform-log-asserts

[jridgewell]

The only big change here is now we'll try to statically analyze assertions.

• If we're asserting a type and we know that the argument is not of that type, we rewrite to a throw expression
• Else if we're asserting truthiness and the argument is falsey, we rewrite to a throw expression

This is to better support stubbed out methods, eg, layers:

class Resources {
  layersStuff() {
    devAssert(this.layersEnabled_);
    // lots of code that can be DCE'd when layers is statically disabled
  }
}

Fixes #23960.

[rsimha]

I tested this PR locally after removing AmpPass.java, and am still seeing the number of instances of assert in v0.js increase from 20 to 80. Happy to chat offline to make sure we're on the same page.

[jridgewell]

That's due to

amphtml/build-system/build.conf.js

Lines 138 to 140 in c5d6e5a

	if (isSinglePass) {
	applied.push(localPlugin('transform-amp-asserts'));
	}

.

[rsimha]

You're right. Removing if (isSinglePass) and deleting AmpPass.java brings down the number of asserts from 80 to 30. (You said the additional 10 are intentional.)

This PR LGTM based on the testing I did . Will allow @erwinmombay and @choumx review the transform code.