add github workflows for new modules

.github/workflows/run-gradle-task.yml

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+name: Execute Gradle Task
+
+on:
+  workflow_call:
+    inputs:
+      gradle-task:
+        required: true
+        type: string
+
+jobs:
+  run:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Java17
+        uses: actions/setup-java@v4
+        with:
+          distribution: 'zulu'
+          java-version: '17'
+          cache: 'gradle'
+
+      - name: Run Gradle Task
+        run: ./gradlew ${{ inputs.gradle-task }}

.github/workflows/test-core.yml

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+name: Test egklib-core
+
+on: [push]
+
+jobs:
+  jvm:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-encrypt:jvmTest
+
+  node:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-encrypt:jsNodeTest
+
+  browser:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-encrypt:jsBrowserTest

.github/workflows/test-encrypt.yml

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+name: Test egklib-encrypt
+
+on: [push]
+
+jobs:
+  jvm:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-core:jvmTest
+
+  node:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-core:jsNodeTest
+
+  browser:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-core:jsBrowserTest

.github/workflows/test-trustee.yml

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+name: Test egklib-trustee
+
+on: [push]
+
+jobs:
+  jvm:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-trustee:jvmTest
+
+  node:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-trustee:jsNodeTest
+
+  browser:
+    uses: ./.github/workflows/run-gradle-task.yml
+    with:
+      gradle-task: egklib-trustee:jsBrowserTest