Add support for loading static analyzer plugins

[Xenowa]

Purpose

Add functionalities to:

• Load external analyzer compiler plugins defined in a Scan.toml file and perform additional analysis.

[[analyzer]]
org = "exampleOrg"
name = "example_module_static_code_analyzer"

[[analyzer]]
org = "ballerina"
name = "example_module_static_code_analyzer"
version = "0.1.0"

[[analyzer]]
org = "ballerinax"
name = "example_module_static_code_analyzer"
version = "0.1.0"
repository = "local"

• print all static code analysis rules to the console.

        RuleID                                           | Rule Severity | Rule Description 
        ------------------------------------------------------------------------------------
        ballerina:1                                      | CODE_SMELL    | Avoid checkpanic 
        ballerina/example_module_static_code_analyzer:1  | CODE_SMELL    | rule 1           
        ballerina/example_module_static_code_analyzer:2  | BUG           | rule 2           
        ballerina/example_module_static_code_analyzer:3  | VULNERABILITY | rule 3           
        ballerinax/example_module_static_code_analyzer:1 | CODE_SMELL    | rule 1           
        ballerinax/example_module_static_code_analyzer:2 | BUG           | rule 2           
        ballerinax/example_module_static_code_analyzer:3 | VULNERABILITY | rule 3           
        exampleOrg/example_module_static_code_analyzer:1 | CODE_SMELL    | rule 1           
        exampleOrg/example_module_static_code_analyzer:2 | BUG           | rule 2           
        exampleOrg/example_module_static_code_analyzer:3 | VULNERABILITY | rule 3 

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 79.79798% with 40 lines in your changes missing coverage. Please review.

Project coverage is 82.31%. Comparing base (098a3cd) to head (64b9fb9).

:exclamation: Current head 64b9fb9 differs from pull request most recent head 2f257a0

Please upload reports for the commit 2f257a0 to get more accurate results.

Files	Patch %	Lines
...va/io/ballerina/scan/internal/ProjectAnalyzer.java	76.36%	15 Missing and 11 partials :warning:
.../main/java/io/ballerina/scan/internal/ScanCmd.java	35.71%	7 Missing and 2 partials :warning:
...c/main/java/io/ballerina/scan/utils/ScanUtils.java	88.88%	5 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## static-code-analysis-tool #15 +/- ## =============================================================== - Coverage 82.41% 82.31% -0.10% - Complexity 115 146 +31 =============================================================== Files 14 17 +3 Lines 489 639 +150 Branches 53 75 +22 =============================================================== + Hits 403 526 +123 - Misses 59 76 +17 - Partials 27 37 +10 ```

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