fix: make tap feature opt-in and fix panel opening bug

[rjvim]

• Fix where tap activation opens entire panel instead of just showing the "M" icon
• Make tap feature opt-in via new data-enable-tap-feature attribute
• Update MetaScanOptions interface to include enableTapFeature option
• Enhance error handling and add detailed logging for debugging
• Add test/tap-feature-test.html to verify functionality

Closes #63

[rjvim]

Test Cases:

data-auto-enable="true"

This should show M icon by default

data-auto-enable="false" && data-enable-tap-feature="false"

This shouldn't show M icon by default

• Even when we click 5 times on page, M shouldn't activate
• But if we run window.MetaScan.enableOrDisable(true); from console, it should show M
• If we run window.MetaScan.enableOrDisable(false); from console, it should hide M

data-auto-enable="false" && data-enable-tap-feature="true"

This shouldn't show M icon by default

• When we click 5 times on page, M should become visible. Also, here only M should be visible, it shouldn't open the panel itself.
• Now, When we click 5 times on page, M should hide