Build sherpa-onnx as a single shared library (#1078)

When `-D BUILD_SHARED_LIBS=ON` is passed to `cmake`, it builds a single shared library.

Specifically, 

- For C APIs, it builds `libsherpa-onnx-c-api.so`
- For Python APIs, it builds `_sherpa_onnx.cpython-xx-xx.so`
- For Kotlin and Java APIs, it builds `libsherpa-onnx-jni.so`

There is no `libsherpa-onnx-core.so` any longer.

Note it affects only shared libraries.

.github/workflows/linux-jni.yaml

@@ -95,7 +95,13 @@ jobs:
               mkdir build
               cd build
 
-              cmake -DSHERPA_ONNX_ENABLE_TTS=ON -D CMAKE_BUILD_TYPE=Release -D BUILD_SHARED_LIBS=ON -DCMAKE_INSTALL_PREFIX=./install -DSHERPA_ONNX_ENABLE_JNI=ON ..
+              cmake \
+                -D SHERPA_ONNX_ENABLE_TTS=ON \
+                -D CMAKE_BUILD_TYPE=Release \
+                -D BUILD_SHARED_LIBS=ON \
+                -D CMAKE_INSTALL_PREFIX=./install \
+                -D SHERPA_ONNX_ENABLE_JNI=ON \
+                ..
 
               make -j2
               make install
@@ -105,6 +111,12 @@ jobs:
               rm -rf ./install/pkgconfig
               rm -rf ./install/share
 
+              echo "----"
+              ls -lh install/lib
+
+              echo "----"
+              ls -lh install/bin
+
       - name: Display dependencies of sherpa-onnx for linux
         shell: bash
         run: |