Add a "breakpoint" option for reconnecting in UC Mode

[mdmintz]

Add a "breakpoint" option for reconnecting in UC Mode

• Add "breakpoint" option for reconnecting in UC Mode
  --> This resolves Add a "breakpoint" option for the reconnect_time / timeout of UC Mode methods. #2384

Other unrelated changes:

• Add "brave" to valid Chromium binary_location filenames
• Update coverage version in optional dependencies

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More details:

Currently, some UC Mode methods let you set a custom reconnect_time / timeout (in seconds) to specify how long the driver should be disconnected from Chrome to prevent detection before reconnecting again. The new plan here is to add an option of "breakpoint" for that arg's value. Doing this should drop in a Python breakpoint() while the driver is disconnected from the browser. This will allow the user to perform manual actions (until typing c and pressing ENTER to continue from the breakpoint).

Here are those existing methods: (Use self.driver for BaseCase formats. Use sb.driver for SB() formats):

driver.uc_open_with_reconnect(url, reconnect_time)
# Examples:
driver.uc_open_with_reconnect("https://nowsecure.nl/#relax", reconnect_time=5)
driver.uc_open_with_reconnect("https://nowsecure.nl/#relax", 5)

driver.reconnect(timeout)
# Examples:
driver.reconnect(5)
driver.reconnect(timeout=5)

With this change, you'll now be able to set the reconnect_time / timeout to "breakpoint" as a valid option.

Instead of waiting for a set time, the program will run a Python breakpoint() so that the user will be able to continue when ready (using c + ENTER):

Examples that should work once this ticket is completed:

driver.uc_open_with_reconnect("https://nowsecure.nl/#relax", reconnect_time="breakpoint")
driver.uc_open_with_reconnect("https://nowsecure.nl/#relax", "breakpoint")

driver.reconnect(timeout="breakpoint")
driver.reconnect("breakpoint")