fix: Validate base URL in auth fragments

[ShridharGoel]

Fixes #1490

Checklist:

• I have checked for PMD and check-style issues
• I have read the Contribution & Best practices Guide and my PR follows them.
• My branch is up-to-date with the Upstream development branch.

Changes:

Now, base URL entered by the user would be validated and error would be shown if it's found to be invalid.

GIF for the change:

[codecov]

Codecov Report

Merging #1491 into development will decrease coverage by 0.04%.
The diff coverage is 0%.

@@                Coverage Diff                @@
##             development    #1491      +/-   ##
=================================================
- Coverage          24.82%   24.78%   -0.05%     
  Complexity           800      800              
=================================================
  Files                238      238              
  Lines               8955     8970      +15     
  Branches             369      374       +5     
=================================================
  Hits                2223     2223              
- Misses              6648     6663      +15     
  Partials              84       84

Impacted Files	Coverage Δ	Complexity Δ
...ganizer/core/auth/reset/ResetPasswordFragment.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ore/organizer/password/ChangePasswordFragment.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...yay/organizer/core/auth/signup/SignUpFragment.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ntyay/organizer/core/auth/start/StartFragment.java	0% <0%> (ø)	0 <0> (ø)	⬇️
...ntyay/organizer/core/auth/login/LoginFragment.java	0% <0%> (ø)	0 <0> (ø)	⬇️

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[ci-reporter]

The build is failing

✨ Good work on this PR so far! ✨ Unfortunately, the Circle CI build is failing as of 11e12c5. Here's the output:

Run Tests

registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)

I'm sure you can fix it! If you need help, don't hesitate to ask a maintainer of the project!

---

This comment was automagically generated by ci-reporter. If you see a problem, open an issue here.

[ci-reporter]

The build is failing

✨ Good work on this PR so far! ✨ Unfortunately, the Circle CI build is failing as of 11e12c5. Here's the output:

Run Tests

registerResGeneratingTask is deprecated, use registerGeneratedResFolders(FileCollection)

I'm sure you can fix it! If you need help, don't hesitate to ask a maintainer of the project!

---

This comment was automagically generated by ci-reporter. If you see a problem, open an issue here.

[iamareebjamal]

Too complex change

[ShridharGoel]

@iamareebjamal I think it's looking complex because the change had to be implemented in all the fragments which have the functionality of changing the base URL. I think there's no simpler way to do it, is there one? Validating in XML wouldn't work since it validates the view even when it's hidden.

[ShridharGoel]

@iamareebjamal Please review this