Add support for dynamic blocks

[luis-guimaraes-exoawk]

Prerequisites

• [x] Ensure you have latest version of plugin installed
• [x] Search for possible issue duplicates

Installation details

• [x] IDE version (Help->About->Copy to Clipboard)

  
  IntelliJ IDEA 2022.1.1 (Ultimate Edition)
  Build #IU-221.5591.52, built on May 10, 2022
  Runtime version: 11.0.14.1+1-b2043.45 amd64
  VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o.
  GC: G1 Young Generation, G1 Old Generation
  Memory: 2048M
  Cores: 12
  Non-Bundled Plugins:
  org.rust.lang (0.4.170.4627-221)
  org.jetbrains.plugins.go-template (221.5591.19)
  org.intellij.plugins.hcl (221.5591.19)
  mobi.hsz.idea.gitignore (4.4.0)
  com.intellij.kubernetes (221.5591.58)

Kotlin: 221-1.6.21-release-337-IJ5591.52 Current Desktop: KDE

 - [x] intellij-hcl plugin version (`Settings->Plugins`)
`221.5591.19`
 - [x] Terraform version (`terraform -v`)
```text
Terraform v1.2.0
on linux_amd64

Terraform Configuration Files

resource "aws_db_parameter_group" "demo" {
  name   = "mysql-demo"
  family = "mysql5.7"

  dynamic "parameter" {
    for_each = local.rds.conditions.db_parameters
    content {
      name  = each.value.name
      value = each.value.value
    }
  }
}

Exception

The "each" object can be used only in "resource"/"data"/"module" blocks, and only when the "for_each" argument is set

Expected Behavior

It should recognize the values correctly

Actual Behavior

It doesn't recognize valid values

Steps to Reproduce

1. Create a dynamic block with a for_each and check that values are not recognized inside the content block