Added MockUefiDevicePathLib. Added gBS_AllocatePool under MockUefiBootServicesTableLib

Description

[ ] Impacts functionality?
- Functionality - Does the change ultimately impact how firmware functions?
- Examples: Add a new library, publish a new PPI, update an algorithm, ...
[ ] Impacts security?
- Security - Does the change have a direct security impact on an application, flow, or firmware?
- Examples: Crypto algorithm change, buffer overflow fix, parameter validation improvement, ...
[ ] Breaking change?
- Breaking change - Will anyone consuming this change experience a break in build or boot behavior?
- Examples: Add a new library class, move a module to a different repo, call a function in a new library class in a pre-existing module, ...
[ ] Includes tests?
- Tests - Does the change include any explicit test code?
- Examples: Unit tests, integration tests, robot tests, ...
[ ] Includes documentation?
- Documentation - Does the change contain explicit documentation additions outside direct code modifications (and comments)?
- Examples: Update readme file, add feature readme file, link to documentation on an a separate Web page, ...

How This Was Tested

Included this change under a GoogleTest and build successful

Integration Instructions

N/A

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 1.35%. Comparing base (c41e694) to head (46253f9).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## release/202311 #1059 +/- ## =============================================== Coverage 1.35% 1.35% =============================================== Files 1304 1304 Lines 333854 333854 Branches 5103 5103 =============================================== Hits 4512 4512 Misses 329259 329259 Partials 83 83 ``` | [Flag](https://app.codecov.io/gh/microsoft/mu_basecore/pull/1059/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=microsoft) | Coverage Δ | | |---|---|---| | [MdeModulePkg](https://app.codecov.io/gh/microsoft/mu_basecore/pull/1059/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=microsoft) | `0.68% <ø> (ø)` | | | [MdePkg](https://app.codecov.io/gh/microsoft/mu_basecore/pull/1059/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=microsoft) | `5.40% <ø> (ø)` | | | [NetworkPkg](https://app.codecov.io/gh/microsoft/mu_basecore/pull/1059/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=microsoft) | `0.55% <ø> (ø)` | | | [PolicyServicePkg](https://app.codecov.io/gh/microsoft/mu_basecore/pull/1059/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=microsoft) | `30.41% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=microsoft#carryforward-flags-in-the-pull-request-comment) to find out more.

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microsoft / mu_basecore